diff --git a/Utils/CheckAliRootVersion.C b/Utils/CheckAliRootVersion.C
index bbd39a92..5287e7b3 100644
--- a/Utils/CheckAliRootVersion.C
+++ b/Utils/CheckAliRootVersion.C
@@ -71,6 +71,6 @@ Bool_t IsAliPhysicsEqualTo(TString version){
   }else{
     printf("ALIEN_PACKAGES and ALIEN_JDL_PACKAGES not defined\n");
     printf("  --> Cannot check AliPhysics version\n");
-    return kTRUE;
+    return kFALSE;
   }
 }