--- a/devtools/client/locales/en-US/netmonitor.properties
+++ b/devtools/client/locales/en-US/netmonitor.properties
@@ -228,20 +228,16 @@ charts.sizeKB=%S KB
 # LOCALIZATION NOTE (charts.transferredSizeKB): This is the label displayed
 # in pie or table charts specifying the size of a transferred request (in kilobytes).
 charts.transferredSizeKB=%S KB
 
 # LOCALIZATION NOTE (charts.totalS): This is the label displayed
 # in pie or table charts specifying the time for a request to finish (in seconds).
 charts.totalS=%S s
 
-# LOCALIZATION NOTE (charts.totalS): This is the label displayed
-# in the performance analysis view for total requests size, in kilobytes.
-charts.totalSize=Size: %S KB
-
 # LOCALIZATION NOTE (charts.totalTranferredSize): This is the label displayed
 # in the performance analysis view for total transferred size, in kilobytes.
 charts.totalTransferredSize=Transferred Size: %S KB
 
 # LOCALIZATION NOTE (charts.cacheEnabled): This is the label displayed
 # in the performance analysis view for "cache enabled" charts.
 charts.cacheEnabled=Primed cache