diff --git a/src/java.base/share/native/libzip/zip_util.c b/src/java.base/share/native/libzip/zip_util.c
index a996b450ad4..8f2f19c66a2 100644
--- a/src/java.base/share/native/libzip/zip_util.c
+++ b/src/java.base/share/native/libzip/zip_util.c
@@ -437,7 +437,7 @@ hash(const char *s)
 static unsigned int
 hashN(const char *s, int length)
 {
-    int h = 0;
+    unsigned int h = 0;
     while (length-- > 0)
         h = 31*h + *s++;
     return h;