diff --git a/src/main/java/gov/nih/ncats/molvec/Main.java b/src/main/java/gov/nih/ncats/molvec/Main.java
index 8c30906b..9b8ebb29 100644
--- a/src/main/java/gov/nih/ncats/molvec/Main.java
+++ b/src/main/java/gov/nih/ncats/molvec/Main.java
@@ -315,7 +315,7 @@ public static void main(String[] args) throws Exception{
                                     mol -> {
                                         File out = new File(effectivelyFinalOutputDir, f.getName() + ".mol");
                                         try (PrintWriter writer = new PrintWriter(out)) {
-                                            writer.println(mol);
+                                            writer.println(mol.getMolfile().get());
                                         }
                                     }
                             ));