diff --git a/segpy/toolkit.py b/segpy/toolkit.py
index 42ee8de..dd8bb79 100644
--- a/segpy/toolkit.py
+++ b/segpy/toolkit.py
@@ -433,7 +433,7 @@ c
 
     values = (unpack_ibm_floats(buf, count)
               if fmt == 'ibm'
-              else unpack_values(buf, count, item_size, fmt))
+              else unpack_values(buf, count, item_size, fmt, endian))
     assert len(values) == count
     return values