diff --git a/src/tools/clangrefactoringbackend/clangrefactoringbackend.qbs b/src/tools/clangrefactoringbackend/clangrefactoringbackend.qbs
index 901cfb25167..f7a9745e176 100644
--- a/src/tools/clangrefactoringbackend/clangrefactoringbackend.qbs
+++ b/src/tools/clangrefactoringbackend/clangrefactoringbackend.qbs
@@ -14,8 +14,10 @@ QtcTool {
 
     cpp.cxxFlags: base.concat(libclang.llvmToolingCxxFlags)
     cpp.defines: base.concat(libclang.llvmToolingDefines)
-    cpp.includePaths: base.concat(libclang.llvmIncludeDir).concat(libclang.llvmToolingIncludes)
+    cpp.includePaths: base.concat(libclang.llvmIncludeDir)
+                          .concat(libclang.llvmToolingIncludes)
                           .concat(["source"])
+                          .concat(["../clangpchmanagerbackend/source"])
     cpp.libraryPaths: base.concat(libclang.llvmLibDir)
     cpp.dynamicLibraries: base.concat(libclang.llvmToolingLibs)