diff --git a/srcs/Internals/CompactJsonWriter.h b/srcs/Internals/CompactJsonWriter.h
index 4af2df15..8fc4f466 100644
--- a/srcs/Internals/CompactJsonWriter.h
+++ b/srcs/Internals/CompactJsonWriter.h
@@ -5,39 +5,39 @@
 class CompactJsonWriter : public JsonWriter
 {
 public:
-    explicit CompactJsonWriter(Print& sink)
+    explicit CompactJsonWriter(Print* sink)
         : JsonWriter(sink)
     {
     }
 
     virtual void beginArray()
     {
-        _length += _sink.write('[');
+        _length += _sink->write('[');
     }
 
     virtual void endArray()
     {
-        _length += _sink.write(']');
+        _length += _sink->write(']');
     }
 
     virtual void writeColon()
     {
-        _length += _sink.write(':');
+        _length += _sink->write(':');
     }
 
     virtual void writeComma()
     {
-        _length += _sink.write(',');
+        _length += _sink->write(',');
     }
 
     virtual void beginObject()
     {
-        _length += _sink.write('{');
+        _length += _sink->write('{');
     }
 
     virtual void endObject()
     {
-        _length += _sink.write('}');
+        _length += _sink->write('}');
     }
 };
 
diff --git a/srcs/Internals/EscapedString.cpp b/srcs/Internals/EscapedString.cpp
index 4253d323..0472c9a4 100644
--- a/srcs/Internals/EscapedString.cpp
+++ b/srcs/Internals/EscapedString.cpp
@@ -21,25 +21,25 @@ static inline char getSpecialChar(char c)
     return p[1];
 }
 
-static inline size_t printCharTo(char c, Print& p)
+static inline size_t printCharTo(char c, Print* p)
 {
     char specialChar = getSpecialChar(c);
 
     return specialChar != 0
-        ? p.write('\\') + p.write(specialChar)
-        : p.write(c);
+        ? p->write('\\') + p->write(specialChar)
+        : p->write(c);
 }
 
-size_t EscapedString::printTo(const char* s, Print& p)
+size_t EscapedString::printTo(const char* s, Print* p)
 {
-    if (!s) return p.print("null");
+    if (!s) return p->print("null");
     
-    size_t n = p.write('\"');
+    size_t n = p->write('\"');
 
     while (*s)
     {
         n += printCharTo(*s++, p);
     }
 
-    return n + p.write('\"');
+    return n + p->write('\"');
 }
\ No newline at end of file
diff --git a/srcs/Internals/EscapedString.h b/srcs/Internals/EscapedString.h
index ab9ec4d9..01a138e7 100644
--- a/srcs/Internals/EscapedString.h
+++ b/srcs/Internals/EscapedString.h
@@ -14,7 +14,7 @@ namespace ArduinoJson
         class EscapedString
         {
         public:
-            static size_t printTo(const char*, Print&);
+            static size_t printTo(const char*, Print*);
         };
     }
 }
\ No newline at end of file
diff --git a/srcs/Internals/IndentedPrint.cpp b/srcs/Internals/IndentedPrint.cpp
index 75032831..6a2f3dc2 100644
--- a/srcs/Internals/IndentedPrint.cpp
+++ b/srcs/Internals/IndentedPrint.cpp
@@ -27,7 +27,7 @@ size_t IndentedPrint::write(uint8_t c)
     if (isNewLine)
         n += writeTabs();
 
-    n += sink.write(c);
+    n += sink->write(c);
 
     isNewLine = c == '\n';
 
@@ -39,7 +39,7 @@ inline size_t IndentedPrint::writeTabs()
     size_t n = 0;
 
     for (int i = 0; i < level*tabSize; i++)
-        n += sink.write(' ');
+        n += sink->write(' ');
 
     return n;
 }
\ No newline at end of file
diff --git a/srcs/Internals/IndentedPrint.h b/srcs/Internals/IndentedPrint.h
index 2f6f0500..abf65c9d 100644
--- a/srcs/Internals/IndentedPrint.h
+++ b/srcs/Internals/IndentedPrint.h
@@ -19,7 +19,7 @@ namespace ArduinoJson
         public:
 
             IndentedPrint(Print& p)
-                : sink(p)
+                : sink(&p)
             {
                 level = 0;
                 tabSize = 2;
@@ -38,7 +38,7 @@ namespace ArduinoJson
             void setTabSize(uint8_t n);
 
         private:
-            Print& sink;
+            Print* sink;
             uint8_t level : 4;
             uint8_t tabSize : 3;
             bool isNewLine : 1;
diff --git a/srcs/Internals/JsonWriter.cpp b/srcs/Internals/JsonWriter.cpp
index d59f067b..d564d9e7 100644
--- a/srcs/Internals/JsonWriter.cpp
+++ b/srcs/Internals/JsonWriter.cpp
@@ -11,15 +11,15 @@ void JsonWriter::writeString(char const* value)
 void JsonWriter::writeInteger(long value)
 {
 
-    _length += _sink.print(value);
+    _length += _sink->print(value);
 }
 
 void JsonWriter::writeBoolean(bool value)
 {
-    _length += _sink.print(value ? "true" : "false");
+    _length += _sink->print(value ? "true" : "false");
 }
 
 void JsonWriter::writeDouble(double value, int decimals)
 {
-    _length += _sink.print(value, decimals);
+    _length += _sink->print(value, decimals);
 }
\ No newline at end of file
diff --git a/srcs/Internals/JsonWriter.h b/srcs/Internals/JsonWriter.h
index 5dfc6b5b..f1ce846c 100644
--- a/srcs/Internals/JsonWriter.h
+++ b/srcs/Internals/JsonWriter.h
@@ -5,7 +5,7 @@
 class JsonWriter
 {
 public:
-    explicit JsonWriter(Print& sink)
+    explicit JsonWriter(Print* sink)
         : _sink(sink), _length(0)
     {
     }
@@ -34,16 +34,16 @@ public:
 
     void writeEmptyArray()
     {
-        _length += _sink.print("[]");
+        _length += _sink->print("[]");
     }
 
     void writeEmptyObject()
     {
-        _length += _sink.print("{}");
+        _length += _sink->print("{}");
     }
 
 protected:
-    Print& _sink;
+    Print* _sink;
     size_t _length;
 };
 
diff --git a/srcs/Internals/PrettyJsonWriter.h b/srcs/Internals/PrettyJsonWriter.h
index b565697d..8452c8ba 100644
--- a/srcs/Internals/PrettyJsonWriter.h
+++ b/srcs/Internals/PrettyJsonWriter.h
@@ -8,58 +8,58 @@ using namespace ArduinoJson::Generator;
 class PrettyJsonWriter : public JsonWriter
 {
 public:
-    explicit PrettyJsonWriter(IndentedPrint& sink)
+    explicit PrettyJsonWriter(IndentedPrint* sink)
         : JsonWriter(sink), _indenter(sink)
     {
     }
 
     virtual void beginArray()
     {
-        _length += _sink.write('[');
+        _length += _sink->write('[');
         indent();
     }
 
     virtual void endArray()
     {
         unindent();
-        _length += _sink.write(']');
+        _length += _sink->write(']');
     }
 
     virtual void writeColon()
     {
-        _length += _sink.print(": ");
+        _length += _sink->print(": ");
     }
 
     virtual void writeComma()
     {
-        _length += _sink.write(',');
-        _length += _indenter.println();
+        _length += _sink->write(',');
+        _length += _indenter->println();
     }
 
     virtual void beginObject()
     {
-        _length += _sink.write('{');
+        _length += _sink->write('{');
         indent();
     }
 
     virtual void endObject()
     {
         unindent();
-        _length += _sink.write('}');
+        _length += _sink->write('}');
     }
 
 private:
-    IndentedPrint& _indenter;
+    IndentedPrint* _indenter;
 
     void indent()
     {
-        _indenter.indent();
-        _length += _indenter.println();
+        _indenter->indent();
+        _length += _indenter->println();
     }
 
     void unindent()
     {
-        _length += _indenter.println();
-        _indenter.unindent();
+        _length += _indenter->println();
+        _indenter->unindent();
     }
 };
diff --git a/srcs/JsonContainer.cpp b/srcs/JsonContainer.cpp
index 3157437d..6996e1bc 100644
--- a/srcs/JsonContainer.cpp
+++ b/srcs/JsonContainer.cpp
@@ -15,7 +15,7 @@ size_t JsonContainer::printTo(char* buffer, size_t bufferSize) const
 
 size_t JsonContainer::printTo(Print& p) const
 {
-    CompactJsonWriter writer(p);
+    CompactJsonWriter writer(&p);
     _node->writeTo(writer);
     return writer.bytesWritten();
 }
@@ -28,11 +28,17 @@ size_t JsonContainer::prettyPrintTo(char* buffer, size_t bufferSize) const
 
 size_t JsonContainer::prettyPrintTo(IndentedPrint& p) const
 {
-    PrettyJsonWriter writer(p);
+    PrettyJsonWriter writer(&p);
     _node->writeTo(writer);
     return writer.bytesWritten();
 }
 
+size_t JsonContainer::prettyPrintTo(Print& print) const
+{
+    IndentedPrint indentedPrint = IndentedPrint(print);
+    return prettyPrintTo(indentedPrint);
+}
+
 JsonNode* JsonContainer::createNode()
 {
     if (!_node) return 0;
diff --git a/srcs/JsonContainer.h b/srcs/JsonContainer.h
index 028be531..c320c5a0 100644
--- a/srcs/JsonContainer.h
+++ b/srcs/JsonContainer.h
@@ -33,10 +33,7 @@ public:
 
     size_t prettyPrintTo(char* buffer, size_t bufferSize) const;
     size_t prettyPrintTo(ArduinoJson::Generator::IndentedPrint& print) const;
-    size_t prettyPrintTo(Print& print) const
-    {
-        return prettyPrintTo(ArduinoJson::Generator::IndentedPrint(print));
-    }
+    size_t prettyPrintTo(Print& print) const;
 
 protected:
 
diff --git a/srcs/srcs.vcxproj b/srcs/srcs.vcxproj
index 2b1866cb..02869a91 100644
--- a/srcs/srcs.vcxproj
+++ b/srcs/srcs.vcxproj
@@ -49,7 +49,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -60,7 +60,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
diff --git a/tests/EscapedStringTests.cpp b/tests/EscapedStringTests.cpp
index 00805335..58f13578 100644
--- a/tests/EscapedStringTests.cpp
+++ b/tests/EscapedStringTests.cpp
@@ -11,7 +11,7 @@ protected:
     void whenInputIs(const char* input)
     {
         StringBuilder sb(buffer, sizeof(buffer));  
-        returnValue = EscapedString::printTo(input, sb);
+        returnValue = EscapedString::printTo(input, &sb);
     }
 
     void outputMustBe(const char* expected)