diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7142ffe..cd3fd20 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,10 +2,10 @@ project (wdmtg C)
 cmake_minimum_required (VERSION 2.8.12)
 
 # Vala really sucks at producing good C code
-if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)
+if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)
 	set (CMAKE_C_FLAGS_RELEASE
 		"${CMAKE_C_FLAGS_RELEASE} -Wno-ignored-qualifiers -Wno-incompatible-pointer-types")
-endif ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)
+endif ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)
 
 # Options
 option (OPTION_NOINSTALL "Only for developers; work without installing" OFF)