diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 3d6e217..4d01039 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -1023,7 +1023,7 @@
     int		len;
 
     e = skiptowhite(eap->arg);
-    len = e - eap->arg;
+    len = (int)(e - eap->arg);
     e = skipwhite(e);
 
     if (len == 5 && STRNCMP(eap->arg, "start", 5) == 0 && *e != NUL)