diff --git a/src/www/guiconfig.inc b/src/www/guiconfig.inc
index bbb79e1fc..73f893d13 100644
--- a/src/www/guiconfig.inc
+++ b/src/www/guiconfig.inc
@@ -409,11 +409,11 @@ function dump_clog($logfile, $tail, $withorig = true, $grepfor = '', $grepinvert
 	$logarr = '';
 
 	if (is_array($grepfor)) {
-		$grepline .= " | /usr/bin/egrep " . escapeshellarg(implode("|", $grepfor));
+		$grepline .= " | /usr/bin/egrep -i " . escapeshellarg(implode("|", $grepfor));
 	}
 
 	if (is_array($grepinvert)) {
-		$grepline .= " | /usr/bin/egrep -v " . escapeshellarg(implode("|", $grepinvert));
+		$grepline .= " | /usr/bin/egrep -iv " . escapeshellarg(implode("|", $grepinvert));
 	}
 
 	if (is_dir($logfile)) {
@@ -440,11 +440,11 @@ function dump_log($logfile, $tail, $withorig = true, $grepfor = '', $grepinvert
 	$logarr = '';
 
 	if (is_array($grepfor)) {
-		$grepline .= " | /usr/bin/egrep " . escapeshellarg(implode("|", $grepfor));
+		$grepline .= " | /usr/bin/egrep -i " . escapeshellarg(implode("|", $grepfor));
 	}
 
 	if (is_array($grepinvert)) {
-		$grepline .= " | /usr/bin/egrep -v " . escapeshellarg(implode("|", $grepinvert));
+		$grepline .= " | /usr/bin/egrep -iv " . escapeshellarg(implode("|", $grepinvert));
 	}
 
 	if (is_dir($logfile)) {