diff --git a/README.md b/README.md
index e34948a..c169d19 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ The test suite that exercises GSL has been built and passes successfully on the
 * Windows using GCC 5.1
 * GNU/Linux using Clang/LLVM 3.6
 * GNU/Linux using GCC 5.1
-* Mac OS Yosemite using XCode with AppleClang 7.0.0.7000072
+* Mac OS Yosemite using Xcode with AppleClang 7.0.0.7000072
 * Mac OS Yosemite using GCC-5.2.0
 
 > If you successfully port GSL to another platform, we would love to hear from you. Please submit an issue to let us know. Also please consider