diff --git a/spark/src/main/scala/org/apache/comet/expressions/CometCast.scala b/spark/src/main/scala/org/apache/comet/expressions/CometCast.scala
index 859cb13be..6b0b10d80 100644
--- a/spark/src/main/scala/org/apache/comet/expressions/CometCast.scala
+++ b/spark/src/main/scala/org/apache/comet/expressions/CometCast.scala
@@ -204,7 +204,6 @@ object CometCast {
         Compatible()
       case DataTypes.StringType => Compatible()
       case DataTypes.DateType => Compatible()
-      case _: DecimalType => Compatible()
       case _ => Unsupported
     }
   }
diff --git a/spark/src/test/scala/org/apache/comet/CometCastSuite.scala b/spark/src/test/scala/org/apache/comet/CometCastSuite.scala
index f8c1a8b09..27d8e2357 100644
--- a/spark/src/test/scala/org/apache/comet/CometCastSuite.scala
+++ b/spark/src/test/scala/org/apache/comet/CometCastSuite.scala
@@ -838,8 +838,10 @@ class CometCastSuite extends CometTestBase with AdaptiveSparkPlanHelper {
     castTest(generateTimestamps(), DataTypes.DoubleType)
   }
 
-  test("cast TimestampType to DecimalType(10,2)") {
-    castTest(generateTimestamps(), DataTypes.TimestampType)
+  ignore("cast TimestampType to DecimalType(10,2)") {
+    // https://github.com/apache/datafusion-comet/issues/1280
+    // Native cast invoked for unsupported cast from Timestamp(Microsecond, Some("Etc/UTC")) to Decimal128(10, 2)
+    castTest(generateTimestamps(), DataTypes.createDecimalType(10, 2))
   }
 
   test("cast TimestampType to StringType") {