diff --git a/ports/windows/Makefile b/ports/windows/Makefile
index e65c09c53a..af815383c7 100644
--- a/ports/windows/Makefile
+++ b/ports/windows/Makefile
@@ -40,6 +40,7 @@ SRC_C = \
 	realpath.c \
 	init.c \
 	sleep.c \
+	fmode.c \
 	$(SRC_MOD)
 
 OBJ = $(PY_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
diff --git a/ports/windows/init.c b/ports/windows/init.c
index 09fa10417b..73ab713752 100644
--- a/ports/windows/init.c
+++ b/ports/windows/init.c
@@ -31,6 +31,7 @@
 #include <crtdbg.h>
 #endif
 #include "sleep.h"
+#include "fmode.h"
 
 extern BOOL WINAPI console_sighandler(DWORD evt);
 
@@ -61,6 +62,7 @@ void init() {
     // https://msdn.microsoft.com/en-us/library/bb531344(v=vs.140).aspx
     _set_output_format(_TWO_DIGIT_EXPONENT);
 #endif
+    set_fmode_binary();
 }
 
 void deinit() {