diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index d907252..efa5dc8 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -72,7 +72,7 @@
 
 int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 			     int evidx, u64 addr);
-int symbol__alloc_hist(struct symbol *sym, int nevents);
+int symbol__alloc_hist(struct symbol *sym);
 void symbol__annotate_zero_histograms(struct symbol *sym);
 
 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize);
@@ -99,8 +99,7 @@
 }
 #else
 int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
-			 int nr_events, void(*timer)(void *arg), void *arg,
-			 int delay_secs);
+			 void(*timer)(void *arg), void *arg, int delay_secs);
 #endif
 
 extern const char	*disassembler_style;