diff --git a/installation/language/en-GB/en-GB.ini b/installation/language/en-GB/en-GB.ini
index ce7e2b9390146..7c2c90682b5ab 100644
--- a/installation/language/en-GB/en-GB.ini
+++ b/installation/language/en-GB/en-GB.ini
@@ -252,6 +252,7 @@ JLIB_INSTALLER_ABORT_PACK_INSTALL_ERROR_EXTENSION="Package %1$s: There was an er
 JLIB_INSTALLER_ABORT_PACK_INSTALL_NO_FILES="Package %s: There were no files to install!"
 JLIB_INSTALLER_ERROR_FAIL_COPY_FILE="JInstaller: :Install: Failed to copy file %1$s to %2$s."
 JLIB_INSTALLER_NOT_ERROR="If the error is related to the installation of TinyMCE language files it has no effect on the installation of the language(s). Some language packs created prior to Joomla 3.2.0 may try to install separate TinyMCE language files. As these are now included in the core they no longer need to be installed."
+JLIB_UPDATER_ERROR_OPEN_UPDATE_SITE="Update: Could not open update site #%d "%s", URL: %s"
 JLIB_UTIL_ERROR_CONNECT_DATABASE="JDatabase: :getInstance: Could not connect to database <br>joomla.library: %1$s - %2$s"
 
 ; Strings for the language debugger
diff --git a/installation/language/en-US/en-US.ini b/installation/language/en-US/en-US.ini
index 52e1f44ad795d..47130eea5ca14 100644
--- a/installation/language/en-US/en-US.ini
+++ b/installation/language/en-US/en-US.ini
@@ -252,6 +252,7 @@ JLIB_INSTALLER_ABORT_PACK_INSTALL_ERROR_EXTENSION="Package %1$s: There was an er
 JLIB_INSTALLER_ABORT_PACK_INSTALL_NO_FILES="Package %s: There were no files to install!"
 JLIB_INSTALLER_ERROR_FAIL_COPY_FILE="JInstaller: :Install: Failed to copy file %1$s to %2$s."
 JLIB_INSTALLER_NOT_ERROR="If the error is related to the installation of TinyMCE language files it has no effect on the installation of the language(s). Some language packs created prior to Joomla 3.2.0 may try to install separate TinyMCE language files. As these are now included in the core they no longer need to be installed."
+JLIB_UPDATER_ERROR_OPEN_UPDATE_SITE="Update: Could not open update site #%d &quot;%s&quot;, URL: %s"
 JLIB_UTIL_ERROR_CONNECT_DATABASE="JDatabase: :getInstance: Could not connect to database <br>joomla.library: %1$s - %2$s"
 
 ; Strings for the language debugger