diff --git a/src/common/hostlist.c b/src/common/hostlist.c
index 521554ca496fc399dc2ec11aa070869239656ac8..f048a4b087270af784ef26c90e5e336df5556d61 100644
--- a/src/common/hostlist.c
+++ b/src/common/hostlist.c
@@ -574,11 +574,8 @@ static hostname_t hostname_create(const char *hostname)
 	hn->num = 0;
 	hn->prefix = NULL;
 	hn->suffix = NULL;
-#ifdef HAVE_BG
-	if (idx == (strlen(hostname) - 4)) {
-#else
+
 	if (idx == (strlen(hostname) - 1)) {
-#endif
 		if ((hn->prefix = strdup(hostname)) == NULL) {
 			hostname_destroy(hn);
 			out_of_memory("hostname prefix create");