diff --git a/libexec/rbootd/rmpproto.c b/libexec/rbootd/rmpproto.c
index 26f4a069581e..a31ec1de8abf 100644
--- a/libexec/rbootd/rmpproto.c
+++ b/libexec/rbootd/rmpproto.c
@@ -332,7 +332,8 @@ SendBootRepl(struct rmp_packet *req, RMPCONN *rconn, char *filelist[])
 	 *  stripped file name and spoof the client into thinking that it
 	 *  really got what it wanted.
 	 */
-	filename = (filename = strrchr(filepath,'/'))? ++filename: filepath;
+	filename = strrchr(filepath,'/');
+	filename = filename? filename + 1: filepath;
 
 	/*
 	 *  Check that this is a valid boot file name.