diff --git a/src/context_tool.c b/src/context_tool.c
index e75f85399b20b05250bf51c1d9393374b4c55529..bb243efca2946bd65c89b7b6fe5e70eaaf647c86 100644
--- a/src/context_tool.c
+++ b/src/context_tool.c
@@ -98,7 +98,7 @@ int32_t CheckFileAndGetFileContext(const char *inputFile, char **contextBufPtr,
         PRINT_ERR("input file is NULL.\n");
         return -1;
     }
-    uint32_t ret = GetFileContext(inputFile, contextBufPtr, bufferLen);
+    int32_t ret = GetFileContext(inputFile, contextBufPtr, bufferLen);
     if (ret != 0) {
         PRINT_ERR("GetFileContext failed, input file : %s\n", inputFile);
     }