diff --git a/cryptest.nmake b/cryptest.nmake
index 00776214..1aaeea75 100644
--- a/cryptest.nmake
+++ b/cryptest.nmake
@@ -82,8 +82,8 @@ LDLIBS = $(LDLIBS) ws2_32.lib kernel32.lib
 !ENDIF
 
 !IF "$(PLATFORM)" == "ARM"
-# CXXFLAGS = $(CXXFLAGS) /DWINAPI_FAMILY=WINAPI_FAMILY_PHONE_APP
-# CXXFLAGS = $(CXXFLAGS) /D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1
+# CXXFLAGS = $(CXXFLAGS) /FI winapifamily.h /DWINAPI_FAMILY=WINAPI_FAMILY_PHONE_APP
+# CXXFLAGS = $(CXXFLAGS) /FI winapifamily.h /D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1
 # LDLIBS = $(LDLIBS) ws2_32.lib
 !ENDIF