diff --git a/storage/src/main/java/org/apache/kafka/storage/internals/log/AbstractIndex.java b/storage/src/main/java/org/apache/kafka/storage/internals/log/AbstractIndex.java
index 9c7c645c4a705..bf1bd802f5e0c 100644
--- a/storage/src/main/java/org/apache/kafka/storage/internals/log/AbstractIndex.java
+++ b/storage/src/main/java/org/apache/kafka/storage/internals/log/AbstractIndex.java
@@ -399,8 +399,8 @@ protected void safeForceUnmap() {
     /**
      * Forcefully free the buffer's mmap.
      */
-    // Visible for testing, we can make this protected once OffsetIndexTest is in the same package as this class
-    public void forceUnmap() throws IOException {
+    // Visible for testing
+    protected void forceUnmap() throws IOException {
         try {
             ByteBufferUnmapper.unmap(file.getAbsolutePath(), mmap);
         } finally {