diff --git a/io_export_psk_psa/psa/builder.py b/io_export_psk_psa/psa/builder.py
index 6c3c4b3..e1846f9 100644
--- a/io_export_psk_psa/psa/builder.py
+++ b/io_export_psk_psa/psa/builder.py
@@ -90,7 +90,7 @@ class PsaBuilder(object):
             frame_count = frame_max - frame_min + 1
 
             for frame in range(frame_count):
-                context.scene.frame_set(frame)
+                context.scene.frame_set(frame_min + frame)
 
                 for bone in pose_bones:
                     key = Psa.Key()