diff --git a/CMakeLists.txt b/CMakeLists.txt
index c3ef935..845ec06 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -148,7 +148,7 @@ set(executables
 find_program(BASH_EXECUTABLE bash)
 find_program(SED_EXECUTABLE sed)
 if(BASH_EXECUTABLE AND SED_EXECUTABLE)
-  set(BUILD_TEST ON)
+  option(BUILD_TEST "" ON)
 else(BASH_EXECUTABLE AND SED_EXECUTABLE)
   message(STATUS "WARNING: sed or bash not available so disabling testing")
 endif(BASH_EXECUTABLE AND SED_EXECUTABLE)