diff --git a/src/libs/glsl/glsl.g b/src/libs/glsl/glsl.g
index e5fff79691b..91b26748314 100644
--- a/src/libs/glsl/glsl.g
+++ b/src/libs/glsl/glsl.g
@@ -321,7 +321,7 @@ private:
     inline int consumeToken() {
         if (_index < int(_tokens.size()))
             return _index++;
-        return _tokens.size() - 1;
+        return static_cast<int>(_tokens.size()) - 1;
     }
     inline const Token &tokenAt(int index) const {
         if (index == 0)
@@ -468,30 +468,30 @@ Parser::Parser(Engine *engine, const char *source, unsigned size, int variant)
 
         switch (tk.kind) {
         case T_LEFT_PAREN:
-            parenStack.push(_tokens.size());
+            parenStack.push(static_cast<int>(_tokens.size()));
             break;
         case T_LEFT_BRACKET:
-            bracketStack.push(_tokens.size());
+            bracketStack.push(static_cast<int>(_tokens.size()));
             break;
         case T_LEFT_BRACE:
-            braceStack.push(_tokens.size());
+            braceStack.push(static_cast<int>(_tokens.size()));
             break;
 
         case T_RIGHT_PAREN:
             if (! parenStack.empty()) {
-                _tokens[parenStack.top()].matchingBrace = _tokens.size();
+                _tokens[parenStack.top()].matchingBrace = static_cast<int>(_tokens.size());
                 parenStack.pop();
             }
             break;
         case T_RIGHT_BRACKET:
             if (! bracketStack.empty()) {
-                _tokens[bracketStack.top()].matchingBrace = _tokens.size();
+                _tokens[bracketStack.top()].matchingBrace = static_cast<int>(_tokens.size());
                 bracketStack.pop();
             }
             break;
         case T_RIGHT_BRACE:
             if (! braceStack.empty()) {
-                _tokens[braceStack.top()].matchingBrace = _tokens.size();
+                _tokens[braceStack.top()].matchingBrace = static_cast<int>(_tokens.size());
                 braceStack.pop();
             }
             break;
diff --git a/src/libs/glsl/glslparser.cpp b/src/libs/glsl/glslparser.cpp
index fb108413eaa..1f10c464b21 100644
--- a/src/libs/glsl/glslparser.cpp
+++ b/src/libs/glsl/glslparser.cpp
@@ -58,30 +58,30 @@ Parser::Parser(Engine *engine, const char *source, unsigned size, int variant)
 
         switch (tk.kind) {
         case T_LEFT_PAREN:
-            parenStack.push(_tokens.size());
+            parenStack.push(static_cast<int>(_tokens.size()));
             break;
         case T_LEFT_BRACKET:
-            bracketStack.push(_tokens.size());
+            bracketStack.push(static_cast<int>(_tokens.size()));
             break;
         case T_LEFT_BRACE:
-            braceStack.push(_tokens.size());
+            braceStack.push(static_cast<int>(_tokens.size()));
             break;
 
         case T_RIGHT_PAREN:
             if (! parenStack.empty()) {
-                _tokens[parenStack.top()].matchingBrace = _tokens.size();
+                _tokens[parenStack.top()].matchingBrace = static_cast<int>(_tokens.size());
                 parenStack.pop();
             }
             break;
         case T_RIGHT_BRACKET:
             if (! bracketStack.empty()) {
-                _tokens[bracketStack.top()].matchingBrace = _tokens.size();
+                _tokens[bracketStack.top()].matchingBrace = static_cast<int>(_tokens.size());
                 bracketStack.pop();
             }
             break;
         case T_RIGHT_BRACE:
             if (! braceStack.empty()) {
-                _tokens[braceStack.top()].matchingBrace = _tokens.size();
+                _tokens[braceStack.top()].matchingBrace = static_cast<int>(_tokens.size());
                 braceStack.pop();
             }
             break;
diff --git a/src/libs/glsl/glslparser.h b/src/libs/glsl/glslparser.h
index 0ef6bbcbad1..f0ccf82cb9e 100644
--- a/src/libs/glsl/glslparser.h
+++ b/src/libs/glsl/glslparser.h
@@ -114,7 +114,7 @@ private:
     inline int consumeToken() {
         if (_index < int(_tokens.size()))
             return _index++;
-        return _tokens.size() - 1;
+        return static_cast<int>(_tokens.size()) - 1;
     }
     inline const Token &tokenAt(int index) const {
         if (index == 0)