diff --git a/fuzz/run-clang.sh b/fuzz/run-clang.sh
index dc52268..0b31557 100755
--- a/fuzz/run-clang.sh
+++ b/fuzz/run-clang.sh
@@ -1,4 +1,4 @@
-#!/bin/sh -e
+#!/bin/bash -e
 #
 # Copyright(c) 2017 Tim Ruehsen
 #
@@ -22,6 +22,15 @@
 #
 # This file is part of libpsl.
 
+trap ctrl_c INT
+
+ctrl_c() {
+  if test -n "$sudo"; then
+    ./${fuzzer} -merge=1 ${fuzzer}.in ${fuzzer}.new
+    rm -rf ${fuzzer}.new
+  fi
+}
+
 if test -z "$1"; then
 	echo "Usage: $0 <fuzzer target>"
 	echo "Example: $0 libpsl_fuzzer"