diff --git a/system/database/DB_query_builder.php b/system/database/DB_query_builder.php
index 1a6cea4..6214806 100644
--- a/system/database/DB_query_builder.php
+++ b/system/database/DB_query_builder.php
@@ -2319,7 +2319,7 @@
 
 				// Split multiple conditions
 				$conditions = preg_split(
-					'/(\bAND\s+|\bOR\s+)/i',
+					'/(?!<[\'"].*)(\s*AND\s+|\s*OR\s+)(?!.*[\'"])/i',
 					$this->{$qb_key}[$i]['condition'],
 					-1,
 					PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY