diff --git a/interfaces/inner_api/syscap_interface.c b/interfaces/inner_api/syscap_interface.c
index 1d5c6189a77ba5744ba73fe2b0420121890cf374..b55f3563ad2e377a2f7d8ae07b65751855e8def7 100644
--- a/interfaces/inner_api/syscap_interface.c
+++ b/interfaces/inner_api/syscap_interface.c
@@ -161,7 +161,7 @@ bool EncodePrivateSyscap(char **output, int *outputLen)
         return false;
     }
 
-    int priLen = bufferLen - PCID_MAIN_BYTES - 1;
+    uint32_t priLen = bufferLen - PCID_MAIN_BYTES - 1;
     if (priLen <= 0) {
         *outputLen = 0;
         return false;
diff --git a/test/unittest/common/syscap_codec_test.cpp b/test/unittest/common/syscap_codec_test.cpp
index 7b9a0eb533de525de9ae4d385212d8083aff311d..b08f8f26698e9ae3504cfbb2380b26aecc61175b 100644
--- a/test/unittest/common/syscap_codec_test.cpp
+++ b/test/unittest/common/syscap_codec_test.cpp
@@ -137,7 +137,7 @@ HWTEST_F(SyscapCodecTest, ComparePcidString, TestSize.Level1)
     const char rpcidString[] = "33588992,1766370052,65536,276824064,0,0,0,0,0,0,"\
                                "0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"\
                                "SystemCapability.vendor.xxxxx1,SystemCapability.device.xxxxx2";
-    const char expect[][256] = {"SystemCapability.Graphic.UI",
+    const char expect[][256] = {"SystemCapability.Graphic.Graphic2D.Vulkan",
                                 "SystemCapability.HiviewDFX.HiDumper",
                                 "SystemCapability.vendor.xxxxx1",
                                 "SystemCapability.device.xxxxx2"};