diff --git a/rc/bin/hpost b/rc/bin/hpost
index cab9c0be5..e47dab878 100755
--- a/rc/bin/hpost
+++ b/rc/bin/hpost
@@ -90,7 +90,7 @@ fn mpost {
 }
 fn multi {
 	f='HJBOUNDARY'
-	menc $"f | $hget -r 'Content-Type: multipart/form-data, boundary='$"f -b $url -P $action
+	menc $"f | $hget -r 'Content-Type: multipart/form-data; boundary='$"f -b $url -P $action
 }
 
 if(! ~ $action ''){