1 files changed, 1 insertions, 1 deletions
diff --git a/GF.cabal b/GF.cabal
index 8d86528b5..207c3944f 100644
--- a/GF.cabal
+++ b/GF.cabal
@@ -709,7 +709,7 @@ executable gf
     other-modules: GF.System.NoReadline
   
   if flag(interrupt)
-    ghc-options: -DUSE_INTERRUPT
+    cpp-options: -DUSE_INTERRUPT
     other-modules: GF.System.UseSignal
   else
     other-modules: GF.System.NoSignal