diff --git a/src/compiler/scala/tools/nsc/transform/patmat/MatchTreeMaking.scala b/src/compiler/scala/tools/nsc/transform/patmat/MatchTreeMaking.scala
index 4a6731744dcd..8cda8fc36c21 100644
--- a/src/compiler/scala/tools/nsc/transform/patmat/MatchTreeMaking.scala
+++ b/src/compiler/scala/tools/nsc/transform/patmat/MatchTreeMaking.scala
@@ -131,7 +131,7 @@ trait MatchTreeMaking extends MatchCodeGen with Debugging {
     }
 
     // unless we're optimizing, emit local variable bindings for all subpatterns of extractor/case class patterns
-    protected val debugInfoEmitVars = !settings.optimise.value
+    protected val debugInfoEmitVars = !settings.opt.value
 
     sealed trait PreserveSubPatBinders extends TreeMaker {
       val subPatBinders: List[Symbol]