diff --git a/interfaces/inner_api/syscap_interface.c b/interfaces/inner_api/syscap_interface.c
index 0e2ece2..4eba410 100644
--- a/interfaces/inner_api/syscap_interface.c
+++ b/interfaces/inner_api/syscap_interface.c
@@ -378,7 +378,7 @@ FREE_SYSCAP_OUT:
     return ret;
 }
 
-static int32_t CheckRpcidFormat(const char *inputFile, char **buffer, uint32_t *Len)
+static int32_t CheckRpcidFormat(const char *inputFile, char **buffer, uint32_t *len)
 {
     uint32_t bufferLen;
     uint16_t sysCaptype, sysCapLength;
@@ -410,7 +410,7 @@ static int32_t CheckRpcidFormat(const char *inputFile, char **buffer, uint32_t *
     }
 
     *buffer = contextBuffer;
-    *Len = bufferLen;
+    *len = bufferLen;
     return 0;
 }
 
diff --git a/src/syscap_tool.c b/src/syscap_tool.c
index d5cceca..1ed89fd 100644
--- a/src/syscap_tool.c
+++ b/src/syscap_tool.c
@@ -569,7 +569,7 @@ int32_t SeparateSyscapFromString(const char *inputString, uint32_t *osArray, uin
 {
     int32_t ret = 0;
     uint32_t i;
-    uint32_t inputLen = strlen(inputString);
+    size_t inputLen = strlen(inputString);
     uint32_t count = 0;
     char *temp = NULL;
     char *tok = NULL;