diff --git a/Utilities/Mergers/include/Mergers/Mergeable.h b/Utilities/Mergers/include/Mergers/Mergeable.h
index 60bbf9748bb2a..fea298739c8b6 100644
--- a/Utilities/Mergers/include/Mergers/Mergeable.h
+++ b/Utilities/Mergers/include/Mergers/Mergeable.h
@@ -9,8 +9,8 @@
 // granted to it by virtue of its status as an Intergovernmental Organization
 // or submit itself to any jurisdiction.
 
-#ifndef ALICEO2_MERGERS_H
-#define ALICEO2_MERGERS_H
+#ifndef ALICEO2_MERGEABLE_H
+#define ALICEO2_MERGEABLE_H
 
 /// \file Mergeable.h
 /// \brief Mergeable concept.
diff --git a/Utilities/Mergers/include/Mergers/MergerAlgorithm.h b/Utilities/Mergers/include/Mergers/MergerAlgorithm.h
index dd5a632a4ba60..5821e1b700655 100644
--- a/Utilities/Mergers/include/Mergers/MergerAlgorithm.h
+++ b/Utilities/Mergers/include/Mergers/MergerAlgorithm.h
@@ -9,8 +9,8 @@
 // granted to it by virtue of its status as an Intergovernmental Organization
 // or submit itself to any jurisdiction.
 
-#ifndef ALICEO2_MERGERS_H
-#define ALICEO2_MERGERS_H
+#ifndef ALICEO2_MERGERALGORITHM_H
+#define ALICEO2_MERGERALGORITHM_H
 
 /// \file MergerAlgorithm.h
 /// \brief Algorithms for merging objects.
@@ -37,4 +37,4 @@ void deleteTCollections(TObject* obj);
 
 } // namespace o2::mergers::algorithm
 
-#endif // ALICEO2_MERGERS_H
+#endif // ALICEO2_MERGERALGORITHM_H