diff --git a/helpers/create-abi-dump.py b/helpers/create-abi-dump.py
--- a/helpers/create-abi-dump.py
+++ b/helpers/create-abi-dump.py
@@ -239,6 +239,7 @@
             </skip_include_paths>
             <add_include_paths>
                 {additionalIncludes}
+                /usr/lib64/qt5/mkspecs/linux-g++
             </add_include_paths>
         """.format(version=version, headers="\n".join(headers), libs="\n".join(libs), additionalIncludes="\n".join(additionalIncludes)) # replace with f-String in Python 3.6