diff --git a/CMakeLists.txt b/CMakeLists.txt
index b404e6916..8b16c278d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,7 +78,7 @@ OPTION ( ASSIMP_COVERALLS
   "Enable this to measure test coverage."
   OFF
 )
-OPTION ( ASSIMP_WERRRO
+OPTION ( ASSIMP_WERROR
   "Treat warnings as errors."
   OFF
 )