diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc3db31..5b326a3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -148,8 +148,8 @@ if(WIN32)
 endif()
 
 # GCC or Clang specialities
-if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU" OR
-   "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+if(CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR
+   CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 	### General stuff
 	if(WIN32)
 		set(CMAKE_SHARED_LIBRARY_PREFIX "")	# DLLs do not have a "lib" prefix
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index cf06c9a..74c2594 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -8,8 +8,8 @@ if(WIN32 AND BUILD_SHARED_LIBS)
   add_definitions("-DGTEST_LINKED_AS_SHARED_LIBRARY")
 endif()
 
-if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU" OR
-   "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+if(CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR
+   CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   set(yaml_test_flags "-Wno-c99-extensions -Wno-variadic-macros -Wno-sign-compare -std=c++11")
 endif()