diff --git a/imagefiles/install-gosu-binary.sh b/imagefiles/install-gosu-binary.sh
index 7a8eae6..5fb51ba 100755
--- a/imagefiles/install-gosu-binary.sh
+++ b/imagefiles/install-gosu-binary.sh
@@ -34,8 +34,13 @@ curl -o /usr/local/bin/gosu.asc -# -SL $url_key
 gpg --verify /usr/local/bin/gosu.asc
 
 # cleanup -- need to kill agent so that there is no race condition for
-# agent files in $GNUPGHOME
-gpgconf --kill gpg-agent 
+# agent files in $GNUPGHOME.  Only need to do this on newer distros
+# with gpgconf installed
+GPGCONF_BIN="$(command -v gpgconf)" || true
+if [ -n "$GPGCONF" ] && [ -x $GPGCONF_BIN ]; then
+	gpgconf --kill gpg-agent 
+fi
+
 rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc
 
 chmod +x /usr/local/bin/gosu