diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 3d96758..0275064 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -2746,7 +2746,7 @@
 		 */
 		++p;
 		len = getdigits(&p);
-		buf = alloc((int)(len + 1));
+		buf = alloc(len + 1);
 		if (buf == NULL)
 		    return TRUE;
 		p = buf;