1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/tng_io.c b/src/lib/tng_io.c
index c17eeef..71c8245 100644
--- a/src/lib/tng_io.c
+++ b/src/lib/tng_io.c
@@ -10992,6 +10992,10 @@ tng_function_status DECLSPECDLLEXPORT tng_num_frame_sets_get
 
     *frame_set = orig_frame_set;
 
+    fseek(tng_data->input_file,
+          (long)tng_data->first_trajectory_frame_set_input_file_pos,
+          SEEK_SET);
+
     return(TNG_SUCCESS);
 }