diff --git a/src/system/helpers.cpp b/src/system/helpers.cpp
index ae6c6a23f..355d50b2a 100644
--- a/src/system/helpers.cpp
+++ b/src/system/helpers.cpp
@@ -282,7 +282,7 @@ int check_dir(const char * dir, bool allow_tmp)
 				ret = 0;	// ok
 		}
 		if(ret == -1)
-			printf("Wrong Filessystem Type: 0x%lx\n",s.f_type);
+			printf("Wrong Filessystem Type: 0x%x\n",s.f_type);
 	}
 	return ret;
 }