--- qemu-clean/sdl.c	2006-04-10 23:43:08.000000000 +0400
+++ qemu/sdl.c	2006-04-11 00:56:01.000000000 +0400
@@ -479,9 +479,9 @@
                     int dz;
                     dz = 0;
 #ifdef SDL_BUTTON_WHEELUP
-                    if (bev->button == SDL_BUTTON_WHEELUP) {
+                    if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
                         dz = -1;
-                    } else if (bev->button == SDL_BUTTON_WHEELDOWN) {
+                    } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
                         dz = 1;
                     }
 #endif