diff --git a/user/rc/rr.c b/user/rc/rr.c
index 91436e5..71706fc 100644
--- a/user/rc/rr.c
+++ b/user/rc/rr.c
@@ -41,7 +41,7 @@ void rc_rr(void) {
   long end = string_conv_strtol(endstr, &ende, 10);
 
   int32_t r = rr(begin, end);
-  if (rr == -1) {
+  if (r == -1) {
     uprintf("rc: failed to generate random number in range\n");
     return;
   }