diff --git a/docs/source/user-guide/compatibility.md b/docs/source/user-guide/compatibility.md
index 23e31d0bc5..a54ad91b00 100644
--- a/docs/source/user-guide/compatibility.md
+++ b/docs/source/user-guide/compatibility.md
@@ -166,6 +166,7 @@ The following cast operations are generally compatible with Spark except for the
 | long | integer |  |
 | long | float |  |
 | long | double |  |
+| long | decimal |  |
 | long | string |  |
 | float | boolean |  |
 | float | byte |  |
@@ -212,7 +213,6 @@ The following cast operations are not compatible with Spark for all inputs and a
 | From Type | To Type | Notes |
 |-|-|-|
 | integer | decimal  | No overflow check |
-| long | decimal  | No overflow check |
 | float | decimal  | There can be rounding differences |
 | double | decimal  | There can be rounding differences |
 | string | float  | Does not support inputs ending with 'd' or 'f'. Does not support 'inf'. Does not support ANSI mode. |
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 337eae11db..18ac0fd812 100644
--- a/spark/src/main/scala/org/apache/comet/expressions/CometCast.scala
+++ b/spark/src/main/scala/org/apache/comet/expressions/CometCast.scala
@@ -253,10 +253,12 @@ object CometCast {
       Compatible()
     case DataTypes.ByteType | DataTypes.ShortType | DataTypes.IntegerType =>
       Compatible()
-    case DataTypes.FloatType | DataTypes.DoubleType =>
+    case d: DecimalType  if(d.scale == 0 && d.precision == 19) =>
       Compatible()
     case _: DecimalType =>
       Incompatible(Some("No overflow check"))
+    case DataTypes.FloatType | DataTypes.DoubleType =>
+      Compatible()
     case _ =>
       Unsupported
   }
diff --git a/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala b/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala
index 42058036e4..866aef8d62 100644
--- a/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala
+++ b/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala
@@ -115,7 +115,7 @@ class CometExpressionSuite extends CometTestBase with AdaptiveSparkPlanHelper {
 
   test("Integral Division Overflow Handling Matches Spark Behavior") {
     withTable("t1") {
-      withSQLConf(CometConf.COMET_CAST_ALLOW_INCOMPATIBLE.key -> "true") {
+      withSQLConf(CometConf.COMET_CAST_ALLOW_INCOMPATIBLE.key -> "false") {
         val value = Long.MinValue
         sql("create table t1(c1 long, c2 short) using parquet")
         sql(s"insert into t1 values($value, -1)")