diff --git a/isthmus/src/test/java/io/substrait/isthmus/CalciteCallTest.java b/isthmus/src/test/java/io/substrait/isthmus/CalciteCallTest.java
index 76b2c4027..fe8b7b6f2 100644
--- a/isthmus/src/test/java/io/substrait/isthmus/CalciteCallTest.java
+++ b/isthmus/src/test/java/io/substrait/isthmus/CalciteCallTest.java
@@ -52,7 +52,7 @@ public void extract() {
         rex.makeCall(
             t(SqlTypeName.INTEGER),
             SqlStdOperatorTable.EXTRACT,
-            ImmutableList.of(rex.makeFlag(TimeUnitRange.MONTH), c(10L, SqlTypeName.TIMESTAMP, 10))),
+            ImmutableList.of(rex.makeFlag(TimeUnitRange.HOUR), c(10L, SqlTypeName.TIMESTAMP, 10))),
         func -> {},
         false);
   }