diff --git a/cryptest.nmake b/cryptest.nmake
index c41033d6..12b1fd3c 100644
--- a/cryptest.nmake
+++ b/cryptest.nmake
@@ -201,10 +201,9 @@ LDFLAGS = $(LDFLAGS) /MACHINE:X64
 LDLIBS = $(LDLIBS) kernel32.lib
 !ENDIF
 
-# We still don't know what we need for ARM64 on Windows. ARM64 and arm64 may be incorrect
 !IF "$(PLATFORM)" == "ARM" || "$(PLATFORM)" == "arm" || "$(PLATFORM)" == "ARM64" || "$(PLATFORM)" == "arm64"
-CXXFLAGS = $(CXXFLAGS) /D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1 /DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP
-# CXXFLAGS = $(CXXFLAGS) /DWINAPI_FAMILY=WINAPI_FAMILY_PHONE_APP
+# CXXFLAGS = $(CXXFLAGS) /D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1 /DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP
+CXXFLAGS = $(CXXFLAGS) /DWINAPI_FAMILY=WINAPI_FAMILY_PHONE_APP
 LIB_SRCS = $(LIB_SRCS) neon_simd.cpp
 LIB_OBJS = $(LIB_OBJS) neon_simd.obj
 # CXXFLAGS = $(CXXFLAGS) /DWINAPI_FAMILY=WINAPI_FAMILY_APP