diff --git a/frameworks/native/neural_network_runtime/nncompiled_cache.cpp b/frameworks/native/neural_network_runtime/nncompiled_cache.cpp
index effcab5ad5360e739bc82cafab988521f3b5c48f..3c3383354d763973099254fb77d19c6b41b21c9c 100644
--- a/frameworks/native/neural_network_runtime/nncompiled_cache.cpp
+++ b/frameworks/native/neural_network_runtime/nncompiled_cache.cpp
@@ -131,6 +131,7 @@ OH_NN_ReturnCode NNCompiledCache::Restore(const std::string& cacheDir,
             cacheInfo.modelCheckSum[i]) {
             LOGE("[NNCompiledCache] Restore failed, the cache model file %{public}s has been changed.",
                  cacheModelPath.c_str());
+            munmap(modelBuffer.data, modelBuffer.length);
             close(modelBuffer.fd);
             return OH_NN_INVALID_FILE;
         }