diff --git a/src/create_pcid.c b/src/create_pcid.c
index 2ddac7947a0843f5837cc295b5abcc73a6ec42a6..ea640b4c7a512f7c76e353955552e9d07ff18483 100644
--- a/src/create_pcid.c
+++ b/src/create_pcid.c
@@ -216,7 +216,13 @@ int32_t CreatePCID(char *inputFile, char *outDirPath)
 
     jsonPriSyscapObj = cJSON_GetObjectItem(jsonSyscapObj, "private");
     if (jsonPriSyscapObj != NULL && cJSON_IsArray(jsonPriSyscapObj)) {
-        privateCapSize = cJSON_GetArraySize(jsonPriSyscapObj);
+        ret = cJSON_GetArraySize(jsonPriSyscapObj);
+        if (ret < 0) {
+            PRINT_ERR("get \"private syscap\" array size failed\n");
+            ret = -1;
+            goto FREE_CONVERT_OUT;
+        }
+        privateCapSize = (uint32_t)ret;
     } else if (jsonPriSyscapObj == NULL) {
         privateCapSize = 0;
     } else {
diff --git a/src/syscap_tool.c b/src/syscap_tool.c
index a8053cf2e5b319aed6e40524038b2641656fb99d..f8e8cad08adbc90bd378568b05a3b138e60d5a91 100644
--- a/src/syscap_tool.c
+++ b/src/syscap_tool.c
@@ -627,12 +627,13 @@ int32_t RPCIDEncode(char *inputFile, char *outDirPath)
         goto FREE_CONTEXT_OUT;
     }
 
-    sysCapSize = cJSON_GetArraySize(sysCapPtr);
-    if (sysCapSize < 0) {
+    ret = cJSON_GetArraySize(sysCapPtr);
+    if (ret < 0) {
         PRINT_ERR("get \"syscap\" array size failed\n");
         ret = -1;
         goto FREE_CONTEXT_OUT;
     }
+    sysCapSize = (uint32_t)ret;
     // 2, to save SysCaptype & SysCapLength
     convertedBufLen += (2 * sizeof(uint16_t) + sysCapSize * SINGLE_FEAT_LENGTH);