diff --git a/gtk/gtkcssprovider.h b/gtk/gtkcssprovider.h
index 4bd8e1aec4..a9c7fdf41b 100644
--- a/gtk/gtkcssprovider.h
+++ b/gtk/gtkcssprovider.h
@@ -40,7 +40,7 @@ typedef enum
   GTK_CSS_PROVIDER_ERROR_IMPORT,
   GTK_CSS_PROVIDER_ERROR_NAME,
   GTK_CSS_PROVIDER_ERROR_DEPRECATED,
-  GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
+  GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE
 } GtkCssProviderError;
 
 GQuark gtk_css_provider_error_quark (void);