diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index f6374a7a..e536e273 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -2613,7 +2613,7 @@ x_i_mkstemp(char *template)
 	char *p;
 
 	char ch[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
-	unsigned long r = rlong();
+	unsigned long r;
 
 	len = xstrxlen(template, PATH_LEN);
 
@@ -2625,8 +2625,10 @@ x_i_mkstemp(char *template)
 
 	for (i = 0; i < 100; i++) {
 
-		for (j = 0; j < 6; j++)
+		for (j = 0; j < 6; j++) {
+			r = rlong();
 			p[j] = ch[r % (sizeof(ch) - 1)];
+		}
 
 		fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600);