diff --git a/ApplicationCode/ProjectDataModel/Annotations/RimAnnotationLineAppearance.cpp b/ApplicationCode/ProjectDataModel/Annotations/RimAnnotationLineAppearance.cpp
index 352a29bd9a..138c88e68c 100644
--- a/ApplicationCode/ProjectDataModel/Annotations/RimAnnotationLineAppearance.cpp
+++ b/ApplicationCode/ProjectDataModel/Annotations/RimAnnotationLineAppearance.cpp
@@ -21,7 +21,7 @@
 
 #include "RiaStdStringTools.h"
 
-#include "QValidator.h"
+#include <QValidator>
 
 #include "cafPdmUiLineEditor.h"