diff --git a/cogl/cogl-types.h b/cogl/cogl-types.h
index 16e9fb574..bca2e00a7 100644
--- a/cogl/cogl-types.h
+++ b/cogl/cogl-types.h
@@ -470,6 +470,10 @@ typedef enum
 
 /**
  * CoglColor:
+ * @red: amount of red
+ * @green: amount of green
+ * @blue: amount of green
+ * @alpha: alpha
  *
  * A structure for holding a color definition. The contents of
  * the CoglColor structure are private and should never by accessed