src/nnn.c | 9 ++++++---

diff --git a/src/nnn.c b/src/nnn.c
index 62c78c0c9747d2bf312255d0bf66198be9b5f1ee..c3997911f7735bb23f00e2ce97a142e9bb22aa11 100644
--- a/src/nnn.c
+++ b/src/nnn.c
@@ -2074,12 +2074,15 @@
 static bool parsebmstr(void)
 {
 	int i = 0;
-	bmstr = strdup(getenv(env_cfg[NNN_BMS]));
-	char *bms = bmstr;
-	char *nextkey = bms;
+	char *nextkey;
+	char *bms = getenv(env_cfg[NNN_BMS]);
 
 	if (!bms || !*bms)
 		return TRUE;
+
+	bmstr = strdup(bms);
+	bms = bmstr;
+	nextkey = bms;
 
 	while (*bms && i < BM_MAX) {
 		if (bms == nextkey) {