diff --git a/src/structs.h b/src/structs.h
index ac0a795..0edd729 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -56,7 +56,7 @@
 {
     int	    ga_len;		    /* current number of items used */
     int	    ga_room;		    /* number of unused items at the end */
-    int	    ga_itemsize;	    /* sizeof one item */
+    int	    ga_itemsize;	    /* sizeof(item) */
     int	    ga_growsize;	    /* number of items to grow each time */
     void    *ga_data;		    /* pointer to the first item */
 } garray_T;