diff --git a/src/main/java/org/replicadb/cli/ToolOptions.java b/src/main/java/org/replicadb/cli/ToolOptions.java
index 1cc7ec5..15fe34e 100644
--- a/src/main/java/org/replicadb/cli/ToolOptions.java
+++ b/src/main/java/org/replicadb/cli/ToolOptions.java
@@ -458,6 +458,7 @@ private void loadOptionsFile() throws IOException {
         setFetchSize(prop.getProperty("fetch.size"));
         setBandwidthThrottling(prop.getProperty("bandwidth.throttling"));
         setQuotedIdentifiers(Boolean.parseBoolean(prop.getProperty("quoted.identifiers")));
+        setSourceFileFormat(prop.getProperty("source.file.format"));
         setSinkFileformat(prop.getProperty("sink.file.format"));
         setSentryDsn(prop.getProperty("sentry.dsn"));
 
diff --git a/src/main/java/org/replicadb/manager/LocalFileManager.java b/src/main/java/org/replicadb/manager/LocalFileManager.java
index a921f1c..f643f87 100644
--- a/src/main/java/org/replicadb/manager/LocalFileManager.java
+++ b/src/main/java/org/replicadb/manager/LocalFileManager.java
@@ -70,7 +70,7 @@ public int insertDataToTable(ResultSet resultSet, int taskId) throws Exception {
 
         // Temporal file name
         String randomFileUrl = options.getSinkConnect() + ".repdb." + (new Random().nextInt(9000) + 1000);
-        LOG.info("Temporal file path: " + randomFileUrl);
+        LOG.info("Temporal file path: {}",randomFileUrl);
 
         // Save the path of temp file
         FileManager.setTempFilePath(taskId,randomFileUrl);
diff --git a/src/main/java/org/replicadb/manager/file/FileManagerFactory.java b/src/main/java/org/replicadb/manager/file/FileManagerFactory.java
index eacf651..321166b 100644
--- a/src/main/java/org/replicadb/manager/file/FileManagerFactory.java
+++ b/src/main/java/org/replicadb/manager/file/FileManagerFactory.java
@@ -35,7 +35,9 @@ public FileManager accept(ToolOptions options, DataSourceType dsType) {
             LOG.info("return CsvFileManager");
             return new CsvFileManager(options, dsType);
         } else {
-            throw new IllegalArgumentException("The file format " + options.getSinkFileformat() + " is not supported. ");
+            // CSV is the Default file format
+            LOG.warn("The file format is not defined, setting CSV as the default file format.");
+            return new CsvFileManager(options, dsType);
         }
     }
 }