diff --git a/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp b/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
index 0829666ef5a..4e7afec62fb 100644
--- a/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
+++ b/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
@@ -53,6 +53,8 @@
 #include <cpptools/cppmodelmanager.h>
 #include <coreplugin/icore.h>
 #include <coreplugin/icontext.h>
+#include <qtsupport/baseqtversion.h>
+#include <qtsupport/qtkitinformation.h>
 #include <utils/qtcassert.h>
 #include <utils/filesystemwatcher.h>
 
@@ -408,6 +410,16 @@ void AutotoolsProject::updateCppCodeModel()
     CppTools::ProjectInfo pInfo(this);
     CppTools::ProjectPartBuilder ppBuilder(pInfo);
 
+    CppTools::ProjectPart::QtVersion activeQtVersion = CppTools::ProjectPart::NoQt;
+    if (QtSupport::BaseQtVersion *qtVersion =
+            QtSupport::QtKitInformation::qtVersion(activeTarget()->kit())) {
+        if (qtVersion->qtVersion() < QtSupport::QtVersionNumber(5,0,0))
+            activeQtVersion = CppTools::ProjectPart::Qt4;
+        else
+            activeQtVersion = CppTools::ProjectPart::Qt5;
+    }
+
+    ppBuilder.setQtVersion(activeQtVersion);
     const QStringList cflags = m_makefileParserThread->cflags();
     QStringList cxxflags = m_makefileParserThread->cxxflags();
     if (cxxflags.isEmpty())
diff --git a/src/plugins/cmakeprojectmanager/cmakeproject.cpp b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
index 8434d2bb52f..eac208d2249 100644
--- a/src/plugins/cmakeprojectmanager/cmakeproject.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
@@ -317,6 +317,16 @@ bool CMakeProject::parseCMakeLists()
     CppTools::ProjectInfo pinfo(this);
     CppTools::ProjectPartBuilder ppBuilder(pinfo);
 
+    CppTools::ProjectPart::QtVersion activeQtVersion = CppTools::ProjectPart::NoQt;
+    if (QtSupport::BaseQtVersion *qtVersion = QtSupport::QtKitInformation::qtVersion(k)) {
+        if (qtVersion->qtVersion() < QtSupport::QtVersionNumber(5,0,0))
+            activeQtVersion = CppTools::ProjectPart::Qt4;
+        else
+            activeQtVersion = CppTools::ProjectPart::Qt5;
+    }
+
+    ppBuilder.setQtVersion(activeQtVersion);
+
     foreach (const CMakeBuildTarget &cbt, m_buildTargets) {
         // This explicitly adds -I. to the include paths
         QStringList includePaths = cbt.includeFiles;
diff --git a/src/plugins/genericprojectmanager/genericproject.cpp b/src/plugins/genericprojectmanager/genericproject.cpp
index ce33b8a889d..f006984922d 100644
--- a/src/plugins/genericprojectmanager/genericproject.cpp
+++ b/src/plugins/genericprojectmanager/genericproject.cpp
@@ -46,7 +46,9 @@
 #include <projectexplorer/kitinformation.h>
 #include <projectexplorer/kitmanager.h>
 #include <projectexplorer/projectexplorerconstants.h>
+#include <qtsupport/baseqtversion.h>
 #include <qtsupport/customexecutablerunconfiguration.h>
+#include <qtsupport/qtkitinformation.h>
 #include <utils/fileutils.h>
 #include <utils/qtcassert.h>
 
@@ -349,6 +351,17 @@ void GenericProject::refreshCppCodeModel()
 
     CppTools::ProjectInfo pInfo(this);
     CppTools::ProjectPartBuilder ppBuilder(pInfo);
+
+    CppTools::ProjectPart::QtVersion activeQtVersion = CppTools::ProjectPart::NoQt;
+    if (QtSupport::BaseQtVersion *qtVersion =
+            QtSupport::QtKitInformation::qtVersion(activeTarget()->kit())) {
+        if (qtVersion->qtVersion() < QtSupport::QtVersionNumber(5,0,0))
+            activeQtVersion = CppTools::ProjectPart::Qt4;
+        else
+            activeQtVersion = CppTools::ProjectPart::Qt5;
+    }
+
+    ppBuilder.setQtVersion(activeQtVersion);
     ppBuilder.setIncludePaths(projectIncludePaths());
     ppBuilder.setConfigFileName(configFileName());
     ppBuilder.setCxxFlags(QStringList() << QLatin1String("-std=c++11"));