1 files changed, 4 insertions, 1 deletions
diff --git a/src/main.c b/src/main.c
index 05ae9da..1eb439b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -197,5 +197,8 @@ main([[maybe_unused]] int argc, [[maybe_unused]] char **argv)
 static void
 framebuffer_size_callback([[maybe_unused]] GLFWwindow *window, int w, int h)
 {
-	glViewport(0, 0, w, h);
+	if (w < h)
+		glViewport(0, 0, w, w);
+	else
+		glViewport(0, 0, h, h);
 }