diff --git a/test/cases/db-update.bats b/test/cases/db-update.bats
index 1da7eef..36511c9 100644
--- a/test/cases/db-update.bats
+++ b/test/cases/db-update.bats
@@ -92,8 +92,9 @@ load ../lib/common
 	db-update
 	checkPackage extra pkg-any-a
 
-	releasePackage extra pkg-any-a
+	PKGEXT=.pkg.tar.gz releasePackage extra pkg-any-a
 	run db-update
+	[[ -z $BUILDDIR ]] || rm -f "${BUILDDIR}/$(__getCheckSum "${TMP}/svn-packages-copy/pkg-any-a/trunk/PKGBUILD")"/*.pkg.tar.gz{,.sig}
 	[ "$status" -ne 0 ]
 }
 
diff --git a/test/lib/common.bash b/test/lib/common.bash
index cad4e13..d34af8a 100644
--- a/test/lib/common.bash
+++ b/test/lib/common.bash
@@ -14,6 +14,11 @@ __getCheckSum() {
 	echo "${result%% *}"
 }
 
+# Check if a file exists, even if the file uses wildcards
+__isGlobfile() {
+	[[ -f $1 ]]
+}
+
 __buildPackage() {
 	local pkgdest=${1:-.}
 	local p
@@ -24,7 +29,7 @@ __buildPackage() {
 
 	if [[ -n ${BUILDDIR} ]]; then
 		cache=${BUILDDIR}/$(__getCheckSum PKGBUILD)
-		if [[ -d ${cache} ]]; then
+		if __isGlobfile "${cache}"/*${PKGEXT}; then
 			cp -Lv ${cache}/*${PKGEXT}{,.sig} ${pkgdest}
 			return 0
 		else