diff --git a/src/internal.h b/src/internal.h
index a25c2daf8..42b932918 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -178,7 +178,7 @@ struct _GLFWwndconfig
     GLFWbool      focused;
     GLFWbool      autoIconify;
     GLFWbool      floating;
-	GLFWbool      fullscreen;
+    GLFWbool      fullscreen;
     _GLFWmonitor* monitor;
 };