diff --git a/lib/conf-parse.y b/lib/conf-parse.y
index cad8dd6b..34f426ab 100644
--- a/lib/conf-parse.y
+++ b/lib/conf-parse.y
@@ -31,11 +31,6 @@
 #include "access.h"
 #include "init.h"
 
-/* These two functions are defined in conf-lex.l */
-extern int sensors_yylex(void);
-extern char sensors_lex_error[];
-extern int sensors_yylineno;
-
 static void sensors_yyerror(const char *err);
 static sensors_expr *malloc_expr(void);