diff --git a/Makefile b/Makefile
index ebff990..2b1e036 100644
--- a/Makefile
+++ b/Makefile
@@ -209,6 +209,7 @@ ifeq ($(uname_O),Cygwin)
 	NO_STRCASESTR = YesPlease
 	NEEDS_LIBICONV = YesPlease
 	NO_IPV6 = YesPlease
+	NO_MMAP = YesPlease
 	X = .exe
 	ALL_CFLAGS += -DUSE_SYMLINK_HEAD=0
 endif