diff --git a/lib/conf-lex.l b/lib/conf-lex.l
index 9912c026..75832486 100644
--- a/lib/conf-lex.l
+++ b/lib/conf-lex.l
@@ -74,10 +74,6 @@ FLOAT   [[:digit:]]*\.?[[:digit:]]+
 
 NUM	0|([1-9][[:digit:]]*)
 
- /* Only number between 1 and 255, octally represented. */
-
-OCTESC		(1[0-7]{0,2})|([2-7][0-7]?)|(0[1-7][0-7]?)|(00[1-7])
-
 
 %%
 
@@ -311,26 +307,12 @@ ignore{BLANK}*	{
 \\t		buffer_add_char("\t");
 \\v		buffer_add_char("\v");
 
- /* We can't support \0, this would cause havoc! */
-
-\\{OCTESC}	{
-		  int res;
-		  sscanf(sensors_yytext+1,"%o",&res);
-		  buffer_add_char(&res);
-		}
-
  /* Other escapes: just copy the character behind the slash */
 
 \\.		{
 		  buffer_add_char(&sensors_yytext[1]);
 		}
 
- /* This prevents backing up; it is otherwise purely redundant */
-
-\\00		{
-		  buffer_add_char("00");
-		}
-
  /* Anything else (including a bare '\' which may be followed by EOF) */
 
 \\		|