diff --git a/epiworld.hpp b/epiworld.hpp
index e4cd145b..07e67c9b 100644
--- a/epiworld.hpp
+++ b/epiworld.hpp
@@ -3786,7 +3786,7 @@ inline void DataBase<TSeq>::write_data(
             #ifdef EPI_DEBUG
             "thread "<< "date " << "virus_id " << "virus " << "state " << "n\n";
             #else
-            "date " << "virus_id " << "virus" << "state " << "n\n";
+            "date " << "virus_id " << "virus " << "state " << "n\n";
             #endif
 
         for (epiworld_fast_uint i = 0; i < hist_virus_id.size(); ++i)
diff --git a/include/epiworld/database-meat.hpp b/include/epiworld/database-meat.hpp
index eabcf954..95e641bb 100644
--- a/include/epiworld/database-meat.hpp
+++ b/include/epiworld/database-meat.hpp
@@ -823,7 +823,7 @@ inline void DataBase<TSeq>::write_data(
             #ifdef EPI_DEBUG
             "thread "<< "date " << "virus_id " << "virus " << "state " << "n\n";
             #else
-            "date " << "virus_id " << "virus" << "state " << "n\n";
+            "date " << "virus_id " << "virus " << "state " << "n\n";
             #endif
 
         for (epiworld_fast_uint i = 0; i < hist_virus_id.size(); ++i)