diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index 2c758521..503a7128 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -250,11 +250,8 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
         break;
       }
 
-      if (g_mousedown == 0) {
-        // Nothing
-      }
-      else if (g_mousemoved && g_isle) {
-          g_isle->Tick(0);
+      if (g_mousedown && g_mousemoved && g_isle) {
+        g_isle->Tick(0);
       }
 
       if (g_mousemoved) {