diff --git a/modules/io/src/mol/pdb_writer.cc b/modules/io/src/mol/pdb_writer.cc
index 3be9390b7d7a3763345364004cbe39853de4579c..d06a5228c5890f593c40c86ac9ceb4617f6ee379 100644
--- a/modules/io/src/mol/pdb_writer.cc
+++ b/modules/io/src/mol/pdb_writer.cc
@@ -443,7 +443,7 @@ void PDBWriter::Write(const mol::AtomHandleList& atoms)
   
 PDBWriter::~PDBWriter()
 {
-  out_ << "END   ";
+  out_ << "END   " << std::endl;
 }
 
 }}