diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 75703380cdb4a..83054945afcf0 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -239,14 +239,14 @@ object SparkBuild extends PomBuild {
 
     javacOptions in Compile ++= Seq(
       "-encoding", "UTF-8",
-      "-source", javacJVMVersion.value,
-      "-Xlint:unchecked"
+      "-source", javacJVMVersion.value
     ),
-    // This -target option cannot be set in the Compile configuration scope since `javadoc` doesn't
-    // play nicely with it; see https://github.com/sbt/sbt/issues/355#issuecomment-3817629 for
-    // additional discussion and explanation.
+    // This -target and Xlint:unchecked options cannot be set in the Compile configuration scope since
+    // `javadoc` doesn't play nicely with them; see https://github.com/sbt/sbt/issues/355#issuecomment-3817629
+    // for additional discussion and explanation.
     javacOptions in (Compile, compile) ++= Seq(
-      "-target", javacJVMVersion.value
+      "-target", javacJVMVersion.value,
+      "-Xlint:unchecked"
     ),
 
     scalacOptions in Compile ++= Seq(