diff --git a/fe/fe-core/src/test/java/org/apache/doris/nereids/rules/expression/PredicatesSplitterTest.java b/fe/fe-core/src/test/java/org/apache/doris/nereids/rules/expression/PredicatesSplitterTest.java
index 4a8f2e981ef116..7c3055b9cef70e 100644
--- a/fe/fe-core/src/test/java/org/apache/doris/nereids/rules/expression/PredicatesSplitterTest.java
+++ b/fe/fe-core/src/test/java/org/apache/doris/nereids/rules/expression/PredicatesSplitterTest.java
@@ -24,6 +24,7 @@
 import org.apache.doris.nereids.trees.expressions.Expression;
 import org.apache.doris.nereids.trees.expressions.Slot;
 import org.apache.doris.nereids.trees.expressions.SlotReference;
+import org.apache.doris.nereids.trees.expressions.literal.BooleanLiteral;
 
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
@@ -68,21 +69,21 @@ private void assetEquals(String expression,
             Expression equalExpression = replaceUnboundSlot(PARSER.parseExpression(expectedEqualExpr), mem);
             Assertions.assertEquals(equalExpression, splitPredicate.getEqualPredicate());
         } else {
-            Assertions.assertNull(splitPredicate.getEqualPredicate());
+            Assertions.assertEquals(splitPredicate.getEqualPredicate(), BooleanLiteral.TRUE);
         }
 
         if (!StringUtils.isEmpty(expectedRangeExpr)) {
             Expression rangeExpression = replaceUnboundSlot(PARSER.parseExpression(expectedRangeExpr), mem);
             Assertions.assertEquals(rangeExpression, splitPredicate.getRangePredicate());
         } else {
-            Assertions.assertNull(splitPredicate.getRangePredicate());
+            Assertions.assertEquals(splitPredicate.getRangePredicate(), BooleanLiteral.TRUE);
         }
 
         if (!StringUtils.isEmpty(expectedResidualExpr)) {
             Expression residualExpression = replaceUnboundSlot(PARSER.parseExpression(expectedResidualExpr), mem);
             Assertions.assertEquals(residualExpression, splitPredicate.getResidualPredicate());
         } else {
-            Assertions.assertNull(splitPredicate.getResidualPredicate());
+            Assertions.assertEquals(splitPredicate.getResidualPredicate(), BooleanLiteral.TRUE);
         }
     }