diff --git a/src/dexorder/final_ohlc.py b/src/dexorder/final_ohlc.py
index 466a543..7255214 100644
--- a/src/dexorder/final_ohlc.py
+++ b/src/dexorder/final_ohlc.py
@@ -187,9 +187,10 @@ class OHLCFile:
             offset = self.file.tell()  # this will end up pointing to the start of the last row
             for line in self.file.readlines():  # all files should be small and can load at once
                 line_number += 1
-                row = line.decode('ascii').strip().split(',')
-                if not row[0]:  # empty line
+                split = line.decode('ascii').strip().split(',')
+                if not split[0]:  # empty line. do not replace row.
                     continue
+                row = split
                 if prev_line is not None:
                     # advance cursor past the previous row
                     offset += len(prev_line)
@@ -202,7 +203,7 @@ class OHLCFile:
                     log.error(f'Couldn\'t read line {line_number} in {self.filename} row {row}')
                     raise
                 prev_line = line
-            if row is not None:
+            if row is not None and row[0]:
                 try:
                     self._cur = [int(row[0]), *(dec(p) for p in row[1:])]  # convert to int timestamp and dec prices
                 except:
@@ -313,7 +314,7 @@ class OHLCFileSeries:
         #
         try:
             start_of_column = self.quote_file.tell()
-            self.quote_file.write(f'{ts},{price:f}'.encode('ascii'))
+            self.quote_file.write(f'{ts},{price:f}\n'.encode('ascii'))
             self.quote_file.truncate()
             self.quote_file.flush()
             self.quote_file.seek(start_of_column)