diff --git a/include/internal/catch_config.hpp b/include/internal/catch_config.hpp
index d7afa63a..e5787efa 100644
--- a/include/internal/catch_config.hpp
+++ b/include/internal/catch_config.hpp
@@ -54,7 +54,7 @@ namespace Catch {
         bool listReporters;
         bool listTestNamesAndSources;
         bool listTestNamesOnly;
-		bool listTestSources;
+        bool listTestSources;
 
         bool showSuccessfulTests;
         bool shouldDebugBreak;