diff --git a/setup.py b/setup.py
index f0604c369..e6caa2c74 100755
--- a/setup.py
+++ b/setup.py
@@ -870,7 +870,7 @@ def build_uniforms_header(skip_generation: bool = False) -> str:
         return dest
     lines = ['#include "gl.h"', '']
     a = lines.append
-    uniform_names = {}
+    uniform_names: Dict[str, Tuple[str, ...]] = {}
     class_names = {}
     function_names = {}