diff --git a/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceBackendMonitor.java b/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceBackendMonitor.java
index 10a9940..0563f62 100644
--- a/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceBackendMonitor.java
+++ b/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceBackendMonitor.java
@@ -45,7 +45,13 @@ public class AccountingPersistenceBackendMonitor implements Runnable {
 		    		UsageRecord usageRecord = BasicUsageRecord.getUsageRecord(line);
 		    		accountingPersistenceBackend.accountWithFallback(usageRecord);
 		    	} catch(Exception e){
-		    		logger.error("Line {} will be lost", line, e);
+		    		logger.error("Was not possible parse line {} to obtain a valid UsageRecord. Going to writing back this line as string fallback file.", line, e);
+		    		FallbackPersistenceBackend fallbackPersistenceBackend = accountingPersistenceBackend.getFallbackPersistence();
+		    		try {
+						fallbackPersistenceBackend.printLine(line);
+					} catch (Exception e1) {
+						logger.error("Was not possible Line {} will be lost", line, e1);
+					}
 		    	}
 		    }
 		} catch (FileNotFoundException e) {
diff --git a/src/main/java/org/gcube/accounting/persistence/FallbackPersistenceBackend.java b/src/main/java/org/gcube/accounting/persistence/FallbackPersistenceBackend.java
index 448a15d..eb96297 100644
--- a/src/main/java/org/gcube/accounting/persistence/FallbackPersistenceBackend.java
+++ b/src/main/java/org/gcube/accounting/persistence/FallbackPersistenceBackend.java
@@ -48,18 +48,22 @@ public class FallbackPersistenceBackend extends AccountingPersistenceBackend {
 	 */
 	@Override
 	protected void reallyAccount(UsageRecord usageRecord) throws Exception {
+		printLine(String.valueOf( usageRecord));
+	}
+
+	public void printLine(String line) throws Exception {
 		synchronized (accountingFallbackFile) {
 			try(FileWriter fw = new FileWriter(accountingFallbackFile, true);
 				BufferedWriter bw = new BufferedWriter(fw);
 				PrintWriter out = new PrintWriter(bw)){
-					out.println(usageRecord);
+					out.println(line);
 					out.flush();
 			} catch( IOException e ){
 			   throw e;
 			}
 		}
 	}
-
+	
 	/**
 	 * {@inheritDoc}
 	 */