diff --git a/Include/grammar.h b/Include/grammar.h
index 37958a6cd25..5fd89158bc3 100644
--- a/Include/grammar.h
+++ b/Include/grammar.h
@@ -99,7 +99,7 @@ void translatelabels PROTO((grammar *g));
 
 void addfirstsets PROTO((grammar *g));
 
-void addaccellerators PROTO((grammar *g));
+void addaccelerators PROTO((grammar *g));
 
 void printgrammar PROTO((grammar *g, FILE *fp));
 void printnonterminals PROTO((grammar *g, FILE *fp));