diff --git a/uisimulator/win32/Makefile b/uisimulator/win32/Makefile
index b443e37956..00e12ace7c 100644
--- a/uisimulator/win32/Makefile
+++ b/uisimulator/win32/Makefile
@@ -50,7 +50,7 @@ LANGUAGE = english
 
 TARGET = $(OBJDIR)/uisw32.exe
 
-DEFINES = -DHAVE_CONFIG_H -DGETTIMEOFDAY_TWO_ARGS -DSIMULATOR -DNOCYGWIN \
+DEFINES = -DHAVE_CONFIG_H -DGETTIMEOFDAY_TWO_ARGS -DSIMULATOR \
 $(KEYPAD) $(DISPLAY) -DAPPSVERSION=\"$(VERSION)\" $(EXTRA_DEFINES) $(RTC)
 
 LDFLAGS =  -lgdi32 -luser32