diff --git a/src/core/geometry/qgsgeometry.h b/src/core/geometry/qgsgeometry.h
index 70bbb5bd6788..9936ee73a303 100644
--- a/src/core/geometry/qgsgeometry.h
+++ b/src/core/geometry/qgsgeometry.h
@@ -104,7 +104,7 @@ class CORE_EXPORT QgsGeometry
     enum OperationResult
     {
       Success = 0, //!< Operation succeeded
-      NothingHappened, //!< Nothing happened, without any error
+      NothingHappened = 1000, //!< Nothing happened, without any error
       InvalidBaseGeometry, //!< The base geometry on which the operation is done is invalid or empty
       InvalidInput, //!< The input geometry (ring, part, split line, etc.) has not the correct geometry type
       GeometryEngineError, //!< Geometry engine misses a method implemented or an error occured in the geometry engine
diff --git a/src/core/geometry/qgsgeometryengine.h b/src/core/geometry/qgsgeometryengine.h
index fca801dac020..02e171888557 100644
--- a/src/core/geometry/qgsgeometryengine.h
+++ b/src/core/geometry/qgsgeometryengine.h
@@ -40,7 +40,7 @@ class CORE_EXPORT QgsGeometryEngine
     enum EngineOperationResult
     {
       Success = 0, //!< Operation succeeded
-      NothingHappened, //!< Nothing happened, without any error
+      NothingHappened = 1000, //!< Nothing happened, without any error
       MethodNotImplemented, //!< Method not implemented in geometry engine
       EngineError, //!< Error occured in the geometry engine
       NodedGeometryError, //!< Error occured while creating a noded geometry