diff --git a/src/context_tool.c b/src/context_tool.c
index 5d0eba1..1440a6b 100644
--- a/src/context_tool.c
+++ b/src/context_tool.c
@@ -155,6 +155,7 @@ int32_t CheckRpcidFormat(const char *inputFile, char **buffer, uint32_t *len)
     }
     if (bufferLen < (2 * sizeof(uint32_t))) { // 2, header of rpcid.sc
         PRINT_ERR("Parse file failed(format is invalid), input file : %s\n", inputFile);
+        free(contextBuffer);
         return -1;
     }
     rpcidHeader = (RPCIDHead *)contextBuffer;