diff --git a/services/common/utils/src/dscreen_maprelation.cpp b/services/common/utils/src/dscreen_maprelation.cpp
index f921be55b363b5a8f5113af902a951cdeb8fa474..43bd88c94680b22fa98c560bffd40087b7ae3428 100644
--- a/services/common/utils/src/dscreen_maprelation.cpp
+++ b/services/common/utils/src/dscreen_maprelation.cpp
@@ -115,7 +115,8 @@ void from_json(const json &j, DisplayRect &rect)
     int32_t startY = j[KEY_POINT_START_Y].get<int32_t>();
     int32_t width = j[KEY_WIDTH].get<int32_t>();
     int32_t height = j[KEY_HEIGHT].get<int32_t>();
-    if ((width > DSCREEN_MAX_VIDEO_DATA_WIDTH) || (height > DSCREEN_MAX_VIDEO_DATA_HEIGHT)) {
+    if ((width > static_cast<int32_t>(DSCREEN_MAX_VIDEO_DATA_WIDTH)) ||
+        (height > static_cast<int32_t>(DSCREEN_MAX_VIDEO_DATA_HEIGHT))) {
         DHLOGE("Screen video width or height exceeds the maximum limit.");
         return;
     }