diff --git a/corsika/setup/SetupStack.hpp b/corsika/setup/SetupStack.hpp
index 44c0cd4a1655df91490428e5c3d4daaceac162fd..847f83834e57d1afa757151df9e92cce7ee8dca4 100644
--- a/corsika/setup/SetupStack.hpp
+++ b/corsika/setup/SetupStack.hpp
@@ -18,8 +18,8 @@ namespace corsika::setup {
 
 #ifdef WITH_HISTORY
 
-  #include <corsika/stack/history/HistoryStackExtension.hpp>
-  #include <corsika/stack/history/HistorySecondaryProducer.hpp>
+#include <corsika/stack/history/HistoryStackExtension.hpp>
+#include <corsika/stack/history/HistorySecondaryProducer.hpp>
 
   /*
    * the version with history