diff --git a/beamtime/xrd/io.py b/beamtime/xrd/io.py
index aa9d09a..da45aad 100644
--- a/beamtime/xrd/io.py
+++ b/beamtime/xrd/io.py
@@ -260,10 +260,10 @@ def read_xy(data, options):
 
     with open(data['path'], 'r') as f:
         position = 0
-    
+
         current_line = f.readline()
         
-        while current_line[0] == '#' or "\'":
+        while current_line[0] == '#' or current_line[0] == '\'':
             position = f.tell()
             current_line = f.readline()