fix typo (#758) `mingW` -> `MinGW`
diff --git a/README.md b/README.md
index f667663..a5b60e8 100644
--- a/README.md
+++ b/README.md
@@ -107,14 +107,14 @@ tested:
| X86 | Solaris | GCC |
| X86 | Solaris | Oracle Solaris Studio C |
| X86 | Windows/Cygwin | GCC |
-| X86 | Windows/MingW | GCC |
+| X86 | Windows/MinGW | GCC |
| X86-64 | FreeBSD | GCC |
| X86-64 | Linux | GCC |
| X86-64 | Linux/x32 | GCC |
| X86-64 | OpenBSD | GCC |
| X86-64 | Solaris | Oracle Solaris Studio C |
| X86-64 | Windows/Cygwin | GCC |
-| X86-64 | Windows/MingW | GCC |
+| X86-64 | Windows/MinGW | GCC |
| X86-64 | Mac OSX | GCC |
| Xtensa | Linux | GCC |