diff --git a/autogen.sh b/autogen.sh
index b988aced..1f22367c 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -102,11 +102,11 @@ if [ "$myhost" = "w32" ]; then
         64)
           w32root="$w64root"
           [ -z "$w32root" ] && w32root="$HOME/w64root"
-          toolprefixes="amd64-mingw32msvc"
+          toolprefixes="i686-w64-mingw32 amd64-mingw32msvc"
           ;;
         *)
           [ -z "$w32root" ] && w32root="$HOME/w32root"
-          toolprefixes="i586-mingw32msvc i386-mingw32msvc"
+          toolprefixes="i686-w64-mingw32 i586-mingw32msvc i386-mingw32msvc"
           ;;
     esac
     echo "Using $w32root as standard install directory" >&2