diff --git a/t/lib-gpg.sh b/t/lib-gpg.sh
index 3fe02876c1..d90160eb0b 100755
--- a/t/lib-gpg.sh
+++ b/t/lib-gpg.sh
@@ -60,7 +60,7 @@ then
 		gpgsm --homedir "${GNUPGHOME}" 2>/dev/null -K \
 			| grep fingerprint: | cut -d" " -f4 | tr -d '\n' > \
 			${GNUPGHOME}/trustlist.txt &&
-		echo " S relax" >> ${GNUPGHOME}/trustlist.txt &&
+		echo " S relax" >>"${GNUPGHOME}/trustlist.txt" &&
 		(gpgconf --kill gpg-agent >/dev/null 2>&1 || : ) &&
 		echo hello | gpgsm --homedir "${GNUPGHOME}" >/dev/null \
 			-u committer@example.com -o /dev/null --sign - 2>&1 &&