diff --git a/l10n/en-US/viewer.properties b/l10n/en-US/viewer.properties
index cdb84d05f..66f4a43e8 100644
--- a/l10n/en-US/viewer.properties
+++ b/l10n/en-US/viewer.properties
@@ -78,13 +78,13 @@ page_scale_auto=Automatic Zoom
 page_scale_actual=Actual Size
 
 # Loading indicator messages
-# LOCALIZATION NOTE (error_line): "{{[percent}}" will be replaced with a percentage
+# LOCALIZATION NOTE (error_line): "{{percent}}" will be replaced with a percentage
 loading=Loading… {{percent}}%
 loading_error_indicator=Error
 loading_error=An error occurred while loading the PDF.
 
 # LOCALIZATION NOTE (text_annotation_type): This is used as a tooltip.
-# "{{[type}}" will be replaced with an annotation type from a list defined in
+# "{{type}}" will be replaced with an annotation type from a list defined in
 # the PDF spec (32000-1:2008 Table 169 – Annotation types).
 # Some common types are e.g.: "Check", "Text", "Comment", "Note"
 text_annotation_type=[{{type}} Annotation]