diff --git a/src/app/puzzle/layout/layoutdef.cpp b/src/app/puzzle/layout/layoutdef.cpp
index 0d11c339f..d6440c3b0 100644
--- a/src/app/puzzle/layout/layoutdef.cpp
+++ b/src/app/puzzle/layout/layoutdef.cpp
@@ -87,7 +87,7 @@ auto StrToGrainlineType(const QString &string) -> GrainlineType
 //---------------------------------------------------------------------------------------------------------------------
 auto VPTransformationOrigon::operator==(const VPTransformationOrigon &origin) const -> bool
 {
-    return origin == origin.origin && custom == origin.custom;
+    return this->origin == origin.origin && custom == origin.custom;
 }
 
 //---------------------------------------------------------------------------------------------------------------------