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 287f7d2377..d28e66abe9 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
@@ -815,12 +815,13 @@ public class FunctionCallExpr extends Expr {
             }
         }
 
-        if ((fnName.getFunction().equalsIgnoreCase(FunctionSet.HLL_UNION_AGG)
-                || fnName.getFunction().equalsIgnoreCase(FunctionSet.HLL_CARDINALITY)
-                || fnName.getFunction().equalsIgnoreCase(FunctionSet.HLL_RAW_AGG))
+        if ((fnName.getFunction().equalsIgnoreCase("HLL_UNION_AGG")
+                || fnName.getFunction().equalsIgnoreCase("HLL_CARDINALITY")
+                || fnName.getFunction().equalsIgnoreCase("HLL_RAW_AGG")
+                || fnName.getFunction().equalsIgnoreCase("HLL_UNION"))
                 && !arg.type.isHllType()) {
             throw new AnalysisException(
-                    "HLL_UNION_AGG, HLL_RAW_AGG and HLL_CARDINALITY's params must be hll column");
+                    "HLL_UNION, HLL_UNION_AGG, HLL_RAW_AGG and HLL_CARDINALITY's params must be hll column");
         }
 
         if (fnName.getFunction().equalsIgnoreCase("min")
@@ -829,7 +830,7 @@ public class FunctionCallExpr extends Expr {
         } else if (fnName.getFunction().equalsIgnoreCase("DISTINCT_PC")
                 || fnName.getFunction().equalsIgnoreCase("DISTINCT_PCSA")
                 || fnName.getFunction().equalsIgnoreCase("NDV")
-                || fnName.getFunction().equalsIgnoreCase(FunctionSet.HLL_UNION_AGG)) {
+                || fnName.getFunction().equalsIgnoreCase("HLL_UNION_AGG")) {
             fnParams.setIsDistinct(false);
         }