diff --git a/src/database.c b/src/database.c
index f0b8cb6..e22289a 100644
--- a/src/database.c
+++ b/src/database.c
@@ -1079,6 +1079,8 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts)
 	    S_ISDIR(st.st_mode) && major(st.st_dev) != 0)
 		db->cache_dir = apk_linked_cache_dir;
 
+	apk_id_cache_init(&db->id_cache, db->root_fd);
+
 	if (dbopts->open_flags & APK_OPENF_WRITE) {
 		db->lock_fd = openat(db->root_fd, "var/lib/apk/lock",
 				     O_CREAT | O_RDWR | O_CLOEXEC, 0400);
@@ -1177,8 +1179,6 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts)
 		goto ret_r;
 	}
 
-	apk_id_cache_init(&db->id_cache, db->root_fd);
-
 	return rr;
 
 ret_errno:
diff --git a/src/io.c b/src/io.c
index 38bc4e6..0f09403 100644
--- a/src/io.c
+++ b/src/io.c
@@ -838,7 +838,7 @@ uid_t apk_resolve_gid(struct apk_id_cache *idc, const char *groupname, uid_t def
 		ci->genid = idc->genid;
 		ci->gid = -1;
 
-		in = fdopen(openat(idc->root_fd, "etc/passwd", O_RDONLY|O_CLOEXEC), "r");
+		in = fdopen(openat(idc->root_fd, "etc/group", O_RDONLY|O_CLOEXEC), "r");
 		if (in != NULL) {
 			do {
 				fgetgrent_r(in, &grent, buf, sizeof(buf), &grp);