diff --git a/phases/40-gnustep-corebase.sh b/phases/40-gnustep-corebase.sh
index 5b081ca..e1abe4c 100755
--- a/phases/40-gnustep-corebase.sh
+++ b/phases/40-gnustep-corebase.sh
@@ -26,7 +26,7 @@ echo "### Running configure"
   CC="`gnustep-config --variable=CC`" \
   CPP="`gnustep-config --variable=CPP`" \
   CXX="`gnustep-config --variable=CXX`" \
-  CFLAGS="$CFLAGS -I$UNIX_INSTALL_PREFIX/include" \
+  CFLAGS="$CFLAGS -I$UNIX_INSTALL_PREFIX/include -D_UCRT_NOISY_NAN" `# define _UCRT_NOISY_NAN to work around https://developercommunity.visualstudio.com/t/NAN-is-no-longer-compile-time-constant-i/10688907` \
   CPPFLAGS="$CPPFLAGS -I$UNIX_INSTALL_PREFIX/include" \
   LDFLAGS="$LDFLAGS -L$UNIX_INSTALL_PREFIX/lib" \