diff --git a/tuf/download.py b/tuf/download.py
index ccf3e6cd..687e8573 100755
--- a/tuf/download.py
+++ b/tuf/download.py
@@ -556,7 +556,7 @@ def _check_downloaded_length(total_downloaded, required_length,
     required_length.
 
     tuf.exceptions.SlowRetrievalError, if the total downloaded was
-    done in in less than the acceptable download speed (as set in
+    done in less than the acceptable download speed (as set in
     tuf.settings.py).
 
   <Returns>
diff --git a/tuf/repository_lib.py b/tuf/repository_lib.py
index 6e474eda..e6d279a4 100755
--- a/tuf/repository_lib.py
+++ b/tuf/repository_lib.py
@@ -726,7 +726,7 @@ def _log_warning_if_expires_soon(rolename, expires_iso8601_timestamp,
   """
 
   # Metadata stores expiration datetimes in ISO8601 format.  Convert to
-  # unix timestamp, subtract from from current time.time() (also in POSIX time)
+  # unix timestamp, subtract from current time.time() (also in POSIX time)
   # and compare against 'seconds_remaining_to_warn'.  Log a warning message
   # to console if 'rolename' expires soon.
   datetime_object = iso8601.parse_date(expires_iso8601_timestamp)