diff --git a/client/main.c b/client/main.c
index a189e104..ff3fcf90 100644
--- a/client/main.c
+++ b/client/main.c
@@ -323,6 +323,8 @@ int renderThread(void * unused)
 
       state.srcSize.x = header.width;
       state.srcSize.y = header.height;
+      if (params.autoResize)
+        SDL_SetWindowSize(state.window, header.width, header.height);
       updatePositionInfo();
     }