diff --git a/src/igmp.c b/src/igmp.c
index 43a19a42..0f105197 100644
--- a/src/igmp.c
+++ b/src/igmp.c
@@ -160,9 +160,10 @@ void acceptIgmp(int recvlen) {
                         }
                     } else {
                         // Activate the route.
-                        my_log(LOG_DEBUG, 0, "Route activate request from %s to %s",
-                            inetFmt(src,s1), inetFmt(dst,s2));
-                        activateRoute(dst, src, upStreamVif[i]-1);
+                        int vifindex = checkVIF->vifindex;
+                        my_log(LOG_DEBUG, 0, "Route activate request from %s to %s on VIF[%d]",
+                            inetFmt(src,s1), inetFmt(dst,s2), vifindex);
+                        activateRoute(dst, src, vifindex);
                         i = MAX_UPS_VIFS;
                     }
                 } else {