diff --git a/scalafmt-core/shared/src/main/scala/org/scalafmt/config/Newlines.scala b/scalafmt-core/shared/src/main/scala/org/scalafmt/config/Newlines.scala
index c8ec03a5d7..14a58b0e73 100644
--- a/scalafmt-core/shared/src/main/scala/org/scalafmt/config/Newlines.scala
+++ b/scalafmt-core/shared/src/main/scala/org/scalafmt/config/Newlines.scala
@@ -333,10 +333,14 @@ object Newlines {
   implicit lazy val codec: ConfCodecEx[Newlines] =
     generic.deriveCodecEx(Newlines()).noTypos
 
-  sealed abstract class SourceHints(val ignoreSourceSplit: Boolean) {
+  sealed abstract class IgnoreSourceSplit {
+    val ignoreSourceSplit: Boolean
     @inline
-    final def in(hints: SourceHints*): Boolean = hints.contains(this)
+    final def in(hints: IgnoreSourceSplit*): Boolean = hints.contains(this)
   }
+
+  sealed abstract class SourceHints(val ignoreSourceSplit: Boolean)
+      extends IgnoreSourceSplit
   // the classic handler of source newlines
   case object classic extends SourceHints(ignoreSourceSplit = false)
   // try to keep newlines
diff --git a/scalafmt-core/shared/src/main/scala/org/scalafmt/config/ScalafmtConfig.scala b/scalafmt-core/shared/src/main/scala/org/scalafmt/config/ScalafmtConfig.scala
index fcb614494a..f4066f9ca5 100644
--- a/scalafmt-core/shared/src/main/scala/org/scalafmt/config/ScalafmtConfig.scala
+++ b/scalafmt-core/shared/src/main/scala/org/scalafmt/config/ScalafmtConfig.scala
@@ -376,7 +376,7 @@ object ScalafmtConfig {
       if (newlines.sourceIgnored) {
         addIf(optIn.configStyleArguments && align.openParenCallSite && newlines.beforeOpenParenCallSite.isEmpty)
         addIf(optIn.configStyleArguments && align.openParenDefnSite && newlines.beforeOpenParenDefnSite.isEmpty)
-        def mustIgnoreSourceSplit(what: sourcecode.Text[Option[Newlines.SourceHints]]) =
+        def mustIgnoreSourceSplit(what: sourcecode.Text[Option[Newlines.IgnoreSourceSplit]]) =
           what.value.foreach(x => addIfDirect(!x.ignoreSourceSplit, s"${what.source}=$x"))
         mustIgnoreSourceSplit(newlines.beforeMultiline)
         mustIgnoreSourceSplit(newlines.beforeMultilineDef)