diff --git a/src/create_pcid.c b/src/create_pcid.c
index 50feb86..0742014 100644
--- a/src/create_pcid.c
+++ b/src/create_pcid.c
@@ -420,11 +420,11 @@ int32_t DecodePCID(char *inputFile, char *outDirPath)
     }
 
     char *ptrPrivateSyscap = (char *)(pcidMain + 1);
-    size_t privateSyscapLen = contextBufLen - sizeof(PCIDMain) - 1;
+    int privateSyscapLen = contextBufLen - sizeof(PCIDMain) - 1;
     char priSyscapStr[SINGLE_SYSCAP_LEN] = {0};
     char *tempPriSyscapStr = priSyscapStr;
     char fullPriSyscapStr[SINGLE_SYSCAP_LEN] = {0};
-    if ((long)privateSyscapLen < 0) {
+    if (privateSyscapLen < 0) {
         PRINT_ERR("parse private syscap failed.");
         ret = -1;
         goto FREE_VECTOR_OUT;