diff --git a/CMakeLists.txt b/CMakeLists.txt
index 72911214..3a7663b0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,7 @@ endif ()
 
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-if (CMAKE_SYSTEM_NAME MATCHES "CYGWIN" OR CMAKE_SYSTEM_NAME MATCHES “MSYS”)
+if (CMAKE_SYSTEM_NAME MATCHES "CYGWIN" OR CMAKE_SYSTEM_NAME MATCHES "MSYS")
     set(CMAKE_CXX_EXTENSIONS ON)
 endif ()