diff --git a/README.md b/README.md
index aa13091..13ed016 100644
--- a/README.md
+++ b/README.md
@@ -30,8 +30,8 @@ A CMake toolchain file for iOS (+ Catalyst), watchOS, tvOS and macOS development
 * _MAC_ARM64_ - to build for macOS on Apple Silicon (arm64)
 * _MAC_UNIVERSAL_ - to build for macOS on x86_64 and Apple Silicon (arm64) combined -- **Apple Silicon Required**
 * _MAC_CATALYST_ - to build iOS for Mac (Catalyst, x86_64)
-* _MAC_CATALYST_ARM64_ - to build iOS for Mac on Apple Silicon (Catalyst, arm64)
-* _MAC_CATALYST_UNIVERSAL_ - to build iOS for Mac on x86_64 and Mac on arm64 combined
+* _MAC_CATALYST_ARM64_ - to build iOS for Mac on Apple Silicon (Catalyst, arm64) -- **Apple Silicon Required**
+* _MAC_CATALYST_UNIVERSAL_ - to build iOS for Mac on x86_64 and Mac on arm64 combined -- **Apple Silicon Required**
 
 # Example usage