diff --git a/src/filter/water/water.cpp b/src/filter/water/water.cpp
index 6a51458..bfe4305 100644
--- a/src/filter/water/water.cpp
+++ b/src/filter/water/water.cpp
@@ -90,7 +90,8 @@ public:
     oy = 80;
     done = 0;
     mode = 0x4000;
-
+    BkGdImagePre = BkGdImage = BkGdImagePost = 0;
+    Height[0] = Height[1] = 0;
     /* default physics */
     density = 4;
     pheight = 600;