diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java
index 2aeeb24c44e94d..148d1e543a4b59 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java
@@ -1897,7 +1897,7 @@ public Type castAllToCompatibleType(List<Expr> exprs) throws AnalysisException {
         }
         // Add implicit casts if necessary.
         for (int i = 0; i < exprs.size(); ++i) {
-            if (exprs.get(i).getType() != compatibleType) {
+            if (!exprs.get(i).getType().equals(compatibleType)) {
                 Expr castExpr = exprs.get(i).castTo(compatibleType);
                 exprs.set(i, castExpr);
             }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java
index 83258db7b44600..2721ca258dd77a 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java
@@ -695,7 +695,7 @@ private void analyzeBuiltinAggFunction(Analyzer analyzer) throws AnalysisExcepti
                 throw new AnalysisException("topn requires second parameter must be a constant Integer Type: "
                         + this.toSql());
             }
-            if (getChild(1).getType() != ScalarType.INT) {
+            if (!getChild(1).getType().equals(ScalarType.INT)) {
                 Expr e = getChild(1).castTo(ScalarType.INT);
                 setChild(1, e);
             }
@@ -704,7 +704,7 @@ private void analyzeBuiltinAggFunction(Analyzer analyzer) throws AnalysisExcepti
                     throw new AnalysisException("topn requires the third parameter must be a constant Integer Type: "
                             + this.toSql());
                 }
-                if (getChild(2).getType() != ScalarType.INT) {
+                if (!getChild(2).getType().equals(ScalarType.INT)) {
                     Expr e = getChild(2).castTo(ScalarType.INT);
                     setChild(2, e);
                 }