diff --git a/apache-fake-log-gen.py b/apache-fake-log-gen.py
index bc432b2..53e4f80 100644
--- a/apache-fake-log-gen.py
+++ b/apache-fake-log-gen.py
@@ -40,7 +40,7 @@ parser = argparse.ArgumentParser(__file__, description="Fake Apache Log Generato
 parser.add_argument("--output", "-o", dest='output_type', help="Write to a Log file, a gzip file or to STDOUT", choices=['LOG','GZ','CONSOLE'] )
 parser.add_argument("--num", "-n", dest='num_lines', help="Number of lines to generate (0 for infinite)", type=int, default=1)
 parser.add_argument("--prefix", "-p", dest='file_prefix', help="Prefix the output file name", type=str)
-parser.add_argument("--sleep", "-s", help="Sleep this long between lines", default=0.0, type=float)
+parser.add_argument("--sleep", "-s", help="Sleep this long between lines (in seconds)", default=0.0, type=float)
 
 args = parser.parse_args()