1 files changed, 1 insertions, 1 deletions
diff --git a/glib/gmutex.h b/glib/gmutex.h
index 688eccdd3..4bbab795e 100644
--- a/glib/gmutex.h
+++ b/glib/gmutex.h
@@ -44,7 +44,7 @@ typedef union
   guint i[2];
 } GRWLock;
 
-typedef union
+typedef struct
 {
   /*< private >*/
   gpointer p;