diff --git a/src/util/disk_cache.c b/src/util/disk_cache.c
index f0381eebff8..943141cb627 100644
--- a/src/util/disk_cache.c
+++ b/src/util/disk_cache.c
@@ -264,7 +264,7 @@ disk_cache_destroy(struct disk_cache *cache)
    if (cache && !cache->path_init_failed) {
       util_queue_finish(&cache->cache_queue);
       util_queue_destroy(&cache->cache_queue);
-      munmap(cache->index_mmap, cache->index_mmap_size);
+      disk_cache_destroy_mmap(cache);
    }
 
    ralloc_free(cache);
diff --git a/src/util/disk_cache_os.c b/src/util/disk_cache_os.c
index f63098158be..48b79ac570c 100644
--- a/src/util/disk_cache_os.c
+++ b/src/util/disk_cache_os.c
@@ -249,6 +249,12 @@ path_fail:
 
    return mapped;
 }
+
+void
+disk_cache_destroy_mmap(struct disk_cache *cache)
+{
+   munmap(cache->index_mmap, cache->index_mmap_size);
+}
 #endif
 
 #endif /* ENABLE_SHADER_CACHE */
diff --git a/src/util/disk_cache_os.h b/src/util/disk_cache_os.h
index 3fe10f9f812..a8524ba6b43 100644
--- a/src/util/disk_cache_os.h
+++ b/src/util/disk_cache_os.h
@@ -83,6 +83,9 @@ bool
 disk_cache_mmap_cache_index(void *mem_ctx, struct disk_cache *cache,
                             char *path);
 
+void
+disk_cache_destroy_mmap(struct disk_cache *cache);
+
 #endif
 
 #endif /* DISK_CACHE_OS_H */