diff --git a/mingw-w64-headers/configure b/mingw-w64-headers/configure
index fb22e85..845378d 100755
--- a/mingw-w64-headers/configure
+++ b/mingw-w64-headers/configure
@@ -2989,6 +2989,21 @@
 fi
 
 case $with_default_msvcrt in
+msvcrt10*)
+  default_msvcrt_version=0x100
+  ;;
+msvcrt20*)
+  default_msvcrt_version=0x200
+  ;;
+msvcrt40*)
+  default_msvcrt_version=0x400
+  ;;
+msvcr70*)
+  default_msvcrt_version=0x700
+  ;;
+msvcr71*)
+  default_msvcrt_version=0x701
+  ;;
 msvcr80*)
   default_msvcrt_version=0x800
   ;;