diff --git a/demo/sdl3_renderer/main.c b/demo/sdl3_renderer/main.c
index 1d8cdce7..577a4ebc 100644
--- a/demo/sdl3_renderer/main.c
+++ b/demo/sdl3_renderer/main.c
@@ -288,6 +288,8 @@ SDL_AppInit(void** appstate, int argc, char* argv[])
     }
 #endif
 
+    nk_input_begin(ctx);
+
     return SDL_APP_CONTINUE;
 }