diff --git a/src/run_with_tmp b/src/run_with_tmp
index 8b8895a..41fab30 100755
--- a/src/run_with_tmp
+++ b/src/run_with_tmp
@@ -1,14 +1,14 @@
 #!/bin/bash
 TMPDIR="$(mktemp -d --tmpdir "${TMPTMPL-tmp.XXXXXXXXXX}")" || exit
-rmtmp() {
-  if [ -n "${TMP_DEBUG-}" ]; then
-    echo "Removing TMPDIR=$TMPDIR" >&2
-  fi
-  rm -rf -- "$TMPDIR"
+function rmtmp() {
+    if [ -n "${TMP_DEBUG-}" ]; then
+        echo "Removing TMPDIR=$TMPDIR" >&2
+    fi
+    rm -rf -- "$TMPDIR"
 }
 trap rmtmp EXIT
 export TMPDIR
 if [ -n "${TMP_DEBUG-}" ]; then
-  echo "Exec $* with TMPDIR=$TMPDIR" >&2
+    echo "Exec $* with TMPDIR=$TMPDIR" >&2
 fi
 "$@"