diff --git a/src/main/scala/scalafix/internal/sbt/ScalafixInterface.scala b/src/main/scala/scalafix/internal/sbt/ScalafixInterface.scala
index 59fa9c2e..13c7b7ed 100644
--- a/src/main/scala/scalafix/internal/sbt/ScalafixInterface.scala
+++ b/src/main/scala/scalafix/internal/sbt/ScalafixInterface.scala
@@ -101,7 +101,9 @@ class ScalafixInterface private (
 
   def rulesThatWillRun(): Seq[ScalafixRule] =
     try scalafixArguments.rulesThatWillRun().asScala
-    catch { case NonFatal(e) => throw new InvalidArgument(e.getMessage) }
+    catch {
+      case e: ScalafixException => throw new InvalidArgument(e.getMessage)
+    }
 
   def validate(): Option[ScalafixException] =
     Option(scalafixArguments.validate().orElse(null))