diff --git a/src/libs/qmljs/qmljscheck.cpp b/src/libs/qmljs/qmljscheck.cpp
index d9fe7df36c6..519706c326d 100644
--- a/src/libs/qmljs/qmljscheck.cpp
+++ b/src/libs/qmljs/qmljscheck.cpp
@@ -1306,7 +1306,17 @@ static bool isStringValue(const Value *value)
     if (value->asStringValue())
         return true;
     if (auto obj = value->asObjectValue())
-        return obj->className() == "QString" || obj->className() == "string";
+        return obj->className() == "QString" || obj->className() == "string" || obj->className() == "String";
+
+    return false;
+}
+
+static bool isBooleanValue(const Value *value)
+{
+    if (value->asBooleanValue())
+        return true;
+    if (auto obj = value->asObjectValue())
+        return obj->className() == "boolean" || obj->className() == "Boolean";
 
     return false;
 }
@@ -1324,6 +1334,8 @@ static bool strictCompareConstant(const Value *lhs, const Value *rhs)
         return false;
     if (isStringValue(lhs) && isStringValue(rhs))
         return false;
+    if (isBooleanValue(lhs) && isBooleanValue(rhs))
+        return false;
     if (lhs->asBooleanValue() && !rhs->asBooleanValue())
         return true;
     if (lhs->asNumberValue() && !rhs->asNumberValue())
diff --git a/tests/auto/qml/codemodel/check/equality-checks.qml b/tests/auto/qml/codemodel/check/equality-checks.qml
index 1a2c1f7580b..9355142df40 100644
--- a/tests/auto/qml/codemodel/check/equality-checks.qml
+++ b/tests/auto/qml/codemodel/check/equality-checks.qml
@@ -139,6 +139,12 @@ Rectangle {
         if (nObj === 1) {}
         if (nNum === 1) {}
 
+        var bObj = Boolean(1 > 0);
+        if (bObj === b) {}
+
+        var sBool = String(b);
+        if (sBool === s) {}
+
     }
 
     ListView {