diff --git a/gcc/rtl.h b/gcc/rtl.h
index 7a4d493b9a3..df3a8fb4711 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -1566,7 +1566,7 @@ extern rtx emit					PARAMS ((rtx));
 int force_line_numbers PARAMS ((void));
 void restore_line_number_status PARAMS ((int old_value));
 extern void renumber_insns                      PARAMS ((FILE *));
-extern void remove_unncessary_notes             PARAMS ((void));
+extern void remove_unnecessary_notes             PARAMS ((void));
 
 /* In insn-emit.c */
 extern void add_clobbers		PARAMS ((rtx, int));