diff --git a/tests/unit/mockup/coreplugin/icore.h b/tests/unit/mockup/coreplugin/icore.h
index b89f53b843d..cfec03f999a 100644
--- a/tests/unit/mockup/coreplugin/icore.h
+++ b/tests/unit/mockup/coreplugin/icore.h
@@ -2,7 +2,7 @@
 
 namespace Core {
 namespace ICore {
-static QString userResourcePath()
+inline static QString userResourcePath()
 {
      return QDir::tempPath();
 }