diff --git a/jdk/src/java.base/share/native/libzip/zip_util.c b/jdk/src/java.base/share/native/libzip/zip_util.c
index d99a5cd66a7..c7505f6aefb 100644
--- a/jdk/src/java.base/share/native/libzip/zip_util.c
+++ b/jdk/src/java.base/share/native/libzip/zip_util.c
@@ -1206,7 +1206,7 @@ ZIP_GetEntry2(jzfile *zip, char *name, jint ulen, jboolean addSlash)
         }
 
         /* Slash is already there? */
-        if (name[ulen-1] == '/') {
+        if (ulen > 0 && name[ulen - 1] == '/') {
             break;
         }