diff --git a/src/window.c b/src/window.c
index becc1fe..82de75e 100644
--- a/src/window.c
+++ b/src/window.c
@@ -131,9 +131,10 @@ void window_use(Window *window, Context *context) {
   glfwGetFramebufferSize(window, &width, &height);
   context->resolution[0] = width;
   context->resolution[1] = height;
-  context->tex_resolution[0] =
-      (int)(context->tex_resolution[1] * context->resolution[0] /
-            context->resolution[1]);
+  if (height > 0) {
+    context->tex_resolution[0] =
+        (int)(context->tex_resolution[1] * width / height);
+  }
 }
 
 void window_close(Window *window) {