diff --git a/sakura_core/cmd/CViewCommander_Window.cpp b/sakura_core/cmd/CViewCommander_Window.cpp
index db3b6dca80..c21d446ad9 100644
--- a/sakura_core/cmd/CViewCommander_Window.cpp
+++ b/sakura_core/cmd/CViewCommander_Window.cpp
@@ -296,6 +296,11 @@ void CViewCommander::Command_TILE_V( void )
 			//	To Here Jul. 28, 2002 genta
 			count++;
 		}
+		if( count == 0 ){
+			delete[] phwndArr;
+			delete[] pEditNodeArr;
+			return;
+		}
 		int height = (rcDesktop.bottom - rcDesktop.top ) / count;
 		for(i = 0; i < count; ++i ){
 			//	Jul. 21, 2002 genta
@@ -350,6 +355,11 @@ void CViewCommander::Command_TILE_H( void )
 			//	To Here Jul. 28, 2002 genta
 			count++;
 		}
+		if (count == 0) {
+			delete[] phwndArr;
+			delete[] pEditNodeArr;
+			return;
+		}
 		int width = (rcDesktop.right - rcDesktop.left ) / count;
 		for(i = 0; i < count; ++i ){
 			//	Jul. 21, 2002 genta