diff --git a/src/libs/cplusplus/cplusplus.pri b/src/libs/cplusplus/cplusplus.pri
index 7fdbdb05a8f..d43b4fc1c9c 100644
--- a/src/libs/cplusplus/cplusplus.pri
+++ b/src/libs/cplusplus/cplusplus.pri
@@ -1,3 +1,3 @@
-INCLUDEPATH += $$IDE_SOURCE_TREE/src/libs/3rdparty/cplusplus
+INCLUDEPATH +=$$IDE_SOURCE_TREE/src/libs/3rdparty $$IDE_SOURCE_TREE/src/libs/3rdparty/cplusplus
 INCLUDEPATH += $$PWD
 LIBS *= -l$$qtLibraryName(CPlusPlus)