diff --git a/autocmake/generate.py b/autocmake/generate.py
index 37a4e23..e0a9a02 100644
--- a/autocmake/generate.py
+++ b/autocmake/generate.py
@@ -142,9 +142,10 @@ def gen_cmakelists(project_name, min_cmake_version, default_build_type, relative
                               'relwithdebinfo': 'RelWithDebInfo',
                               'minsizerel': 'MinSizeRel'}
 
-    s.append('\n# if CMAKE_BUILD_TYPE undefined, we set it to Debug')
+    _build_type = build_type_capitalized[default_build_type]
+    s.append('\n# if CMAKE_BUILD_TYPE undefined, we set it to {0}'.format(_build_type)
     s.append('if(NOT CMAKE_BUILD_TYPE)')
-    s.append('    set(CMAKE_BUILD_TYPE "{0}")'.format(build_type_capitalized[default_build_type]))
+    s.append('    set(CMAKE_BUILD_TYPE "{0}")'.format(_build_type))
     s.append('endif()')
 
     if len(modules) > 0: