diff --git a/src/SteppingAction.cc b/src/SteppingAction.cc
index a16c385c2c8cc8eb4d3aa04cb7d7e57603ac7d0d..885c658bde217a4695d3bc9bd3b4e0d8e45c3260 100644
--- a/src/SteppingAction.cc
+++ b/src/SteppingAction.cc
@@ -55,5 +55,5 @@ SteppingAction::~SteppingAction()
 */
 void SteppingAction::UserSteppingAction(const G4Step* step)
 {
-
+  (void) step;
 }