diff --git a/panda/src/framework/pandaFramework.h b/panda/src/framework/pandaFramework.h
index c2eb04af4b..f86fd86d0b 100644
--- a/panda/src/framework/pandaFramework.h
+++ b/panda/src/framework/pandaFramework.h
@@ -65,7 +65,7 @@ public:
   WindowFramework *open_window(GraphicsPipe *pipe = NULL,
                                GraphicsStateGuardian *gsg = NULL);
   WindowFramework *open_window(const WindowProperties &props,
-			       GraphicsPipe *pipe = NULL,
+                               GraphicsPipe *pipe = NULL,
                                GraphicsStateGuardian *gsg = NULL);
 
   INLINE int get_num_windows() const;