--- a/browser/locales/en-US/chrome/overrides/netError.dtd
+++ b/browser/locales/en-US/chrome/overrides/netError.dtd
@@ -191,17 +191,17 @@ was trying to connect. -->
 <!ENTITY weakCryptoAdvanced.override "(Not secure) Try loading <span class='hostname'></span> using outdated security">
 
 <!-- LOCALIZATION NOTE (certerror.wrongSystemTime) - The <span id='..' /> tags will be injected with actual values,
      please leave them unchanged. -->
 <!ENTITY certerror.wrongSystemTime "<p>A secure connection to <span id='wrongSystemTime_URL'/> isn’t possible because your clock appears to show the wrong time.</p> <p>Your computer thinks it is <span id='wrongSystemTime_systemDate'/>, when it should be <span id='wrongSystemTime_actualDate'/>. To fix this problem, change your date and time settings to match the correct time.</p>">
 
 <!ENTITY certerror.pagetitle1  "Insecure Connection">
 <!ENTITY certerror.whatShouldIDo.badStsCertExplanation "This site uses HTTP
-Strict Transport Security (HSTS) to specify that &brandShortName; only connect
+Strict Transport Security (HSTS) to specify that &brandShortName; may only connect
 to it securely. As a result, it is not possible to add an exception for this
 certificate.">
 <!ENTITY certerror.copyToClipboard.label "Copy text to clipboard">
 
 <!ENTITY inadequateSecurityError.title "Your connection is not secure">
 <!-- LOCALIZATION NOTE (inadequateSecurityError.longDesc) - Do not translate
      "NS_ERROR_NET_INADEQUATE_SECURITY". -->
 <!ENTITY inadequateSecurityError.longDesc "<p><span class='hostname'></span> uses security technology that is outdated and vulnerable to attack. An attacker could easily reveal information which you thought to be safe. The website administrator will need to fix the server first before you can visit the site.</p><p>Error code: NS_ERROR_NET_INADEQUATE_SECURITY</p>">