diff --git a/ckMseed/ckMseed.py b/ckMseed/ckMseed.py
index c5afb0f1b20e481bb9e327f19d4feafa9327dc2c..1ed3cd0d9c00787cdd553a9c27eb59579a1e0e69 100644
--- a/ckMseed/ckMseed.py
+++ b/ckMseed/ckMseed.py
@@ -959,7 +959,8 @@ class MainWindow(QWidget):
                                 if odd_size:
                                     warn = ("WARNING: File size is not an "
                                             "integer number of block size (4096).")
-                                    warn += " Use fixhdr to silence this warning."
+                                    warn += " Start/End times cannot be displayed."
+                                    warn += " To fix variable record length use fixhdr."
                                     warn1 = "\t File:" + fullname
                                     self.write_error(warn, "Size", "red")
                                     self.write_error(warn1, "Size")