1 files changed, 2 insertions, 2 deletions
diff --git a/URPM.xs b/URPM.xs
index 1fe6a6b..1bab88c 100644
--- a/URPM.xs
+++ b/URPM.xs
@@ -1662,7 +1662,7 @@ rpmdb_convert(const char *prefix, int dbtype, int swap, int rebuild) {
   addMacro(NULL, "__dbi_txn", NULL, "create mpool txn thread thread_count=64 nofsync", -1);
 
   /* (ugly) clear any existing locks */
-  fn = rpmGetPath(prefix[0] ? prefix : "", dbpath, "/", "__db.*", NULL);
+  fn = rpmGetPath(prefix && prefix[0] ? prefix : "", dbpath, "/", "__db.*", NULL);
   xx = Glob(fn, 0, NULL, &gl);
   for (i = 0; i < (int)gl.gl_pathc; i++)
     xx = Unlink(gl.gl_pathv[i]);
@@ -1940,7 +1940,7 @@ rpmdb_convert(const char *prefix, int dbtype, int swap, int rebuild) {
 	  fn = _free(fn);
 
 	  /* clear locks */
-	  fn = rpmGetPath(prefix[0] ? prefix : "", dbpath, "/", "__db.*", NULL);
+	  fn = rpmGetPath(prefix && prefix[0] ? prefix : "", dbpath, "/", "__db.*", NULL);
 	  xx = Glob(fn, 0, NULL, &gl);
 	  for (i = 0; i < (int)gl.gl_pathc; i++)
 	    xx = Unlink(gl.gl_pathv[i]);