diff --git a/source/fx/fxfallingtile.cpp b/source/fx/fxfallingtile.cpp
index 4696381e9..e4f2e7334 100644
--- a/source/fx/fxfallingtile.cpp
+++ b/source/fx/fxfallingtile.cpp
@@ -15,8 +15,8 @@
 
 /*****************************************************************************/
 int		TT=1;
-int		FallingTile_DefVY=-2;
-int		FallingTile_DefLife=32;
+const int		FallingTile_DefVY=-2;
+const int		FallingTile_DefLife=32;
 
 /*****************************************************************************/
 /*****************************************************************************/