diff --git a/CMakeLists.txt b/CMakeLists.txt
index c96a599..b30625f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,9 +54,9 @@ endif()
 
 if(RAPIDJSON_BUILD_TESTS)
     if(MSVC11)
-	    # required for VS2012 due to missing support for variadic templates
-	    add_definitions(-D_VARIADIC_MAX=10)
-	endif(MSVC11)
+        # required for VS2012 due to missing support for variadic templates
+        add_definitions(-D_VARIADIC_MAX=10)
+    endif(MSVC11)
     add_subdirectory(test)
     include(CTest)
 endif()