diff --git a/roles/install_fastd/files/verify.sh b/roles/install_fastd/files/verify.sh
index 039e4d0..77cf5f4 100644
--- a/roles/install_fastd/files/verify.sh
+++ b/roles/install_fastd/files/verify.sh
@@ -1,2 +1,6 @@
 #!/bin/sh
+if grep -q $PEER_KEY /etc/fastd_blacklist; then
+    echo $PEER_KEY blacklisted
+    exit 1
+fi
 exit 0