diff --git a/Detectors/TPC/workflow/src/TPCDigitRootWriterSpec.cxx b/Detectors/TPC/workflow/src/TPCDigitRootWriterSpec.cxx
index c676b03aa4162..18df7cfc388ac 100644
--- a/Detectors/TPC/workflow/src/TPCDigitRootWriterSpec.cxx
+++ b/Detectors/TPC/workflow/src/TPCDigitRootWriterSpec.cxx
@@ -77,7 +77,7 @@ DataProcessorSpec getTPCDigitRootWriterSpec(std::vector<int> const& laneConfigur
     }
   };
 
-  //branch definitions for RootTreeWriter spec
+  // branch definitions for RootTreeWriter spec
   using DigitsOutputType = std::vector<o2::tpc::Digit>;
   using CommonModeOutputType = std::vector<o2::tpc::CommonMode>;