diff --git a/highlighters/main/main-highlighter.zsh b/highlighters/main/main-highlighter.zsh
index 2222943..77d7785 100755
--- a/highlighters/main/main-highlighter.zsh
+++ b/highlighters/main/main-highlighter.zsh
@@ -316,7 +316,7 @@ _zsh_highlight_main_highlighter_highlight_dollar_string()
             done
             AA=$arg[$i+1,$c-1]
             # Matching for HEX and OCT values like \0xA6, \xA6 or \012
-            if [[ "$AA" =~ "^(0*(x|X)[0-9a-fA-F]{1,2})" || "$AA" =~ "^(0[0-7]{1,3})" ]];then
+            if [[ "$AA" =~ "^((x|X)[0-9a-fA-F]{1,2})" || "$AA" =~ "^(0[0-7]{1,3})" ]];then
               (( k += $#MATCH ))
               (( i += $#MATCH ))
             else