diff --git a/config.mak.uname b/config.mak.uname
index 85d63821ec..bbf7744ddd 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -249,6 +249,7 @@ ifeq ($(uname_O),Cygwin)
         else
 		NO_REGEX = UnfortunatelyYes
         endif
+	HAVE_DEV_TTY = YesPlease
 	HAVE_ALLOCA_H = YesPlease
 	NEEDS_LIBICONV = YesPlease
 	NO_FAST_WORKING_DIRECTORY = UnfortunatelyYes