diff --git a/comments.py b/comments.py
index 00e480d..57681d2 100644
--- a/comments.py
+++ b/comments.py
@@ -57,7 +57,7 @@ class Comments(qwarc.Item):
 			self.logger.error('Could not find session token')
 			return
 		if sessionToken.lstrip(b'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-') not in (b'', b'=', b'=='):
-			self.logger.error('Unexpected session token value: {sessionToken!r}')
+			self.logger.error(f'Unexpected session token value: {sessionToken!r}')
 			return
 		sessionToken = sessionToken.decode('ascii')
 
@@ -72,12 +72,12 @@ class Comments(qwarc.Item):
 		section = content[continuationStartPos:sectionIdentifierPos]
 		continuationToken = qwarc.utils.str_get_between(section, b'"continuation":"', b'"')
 		if continuationToken.lstrip(b'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-') not in (b'', b'=', b'=='):
-			self.logger.error('Unexpected continuation token value: {continuationToken!r}')
+			self.logger.error(f'Unexpected continuation token value: {continuationToken!r}')
 			return
 		continuationToken = continuationToken.decode('ascii')
 		itct = qwarc.utils.str_get_between(section, b'"clickTrackingParams":"', b'"')
 		if itct.lstrip(b'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-') not in (b'', b'=', b'=='):
-			self.logger.error('Unexpected itct value: {itct!r}')
+			self.logger.error(f'Unexpected itct value: {itct!r}')
 			return
 		itct = itct.decode('ascii')