diff --git a/CMakeLists.txt b/CMakeLists.txt
index 978b1428e28234da527361d48513eb4f27c26cba..8b01c5a81cc8a70f24c8bb443873327df71e5e66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ include( ExternalProject )
 option(WITH_DOC "Build documentation" OFF)
 option(DEBUG "Build with DEBUG support" OFF)
 option(WITH_BOOST "Use Boost libraries instead of GSL" OFF)
-option(WITH_CUSA "Use CUDA/GPU" OFF)
+option(WITH_CUDA "Use CUDA/GPU" OFF)
 option(WITH_MPI "Use MPI" OFF)
 
 ## intialize paths