1 files changed, 1 insertions, 1 deletions
diff --git a/iseq.h b/iseq.h
index 44ed3bdedf..2062c33bb4 100644
--- a/iseq.h
+++ b/iseq.h
@@ -178,7 +178,7 @@ VALUE rb_iseq_first_lineno(const rb_iseq_t *iseq);
 VALUE rb_iseq_method_name(const rb_iseq_t *iseq);
 void rb_iseq_code_location(const rb_iseq_t *iseq, int *first_lineno, int *first_column, int *last_lineno, int *last_column);
 
-void rb_iseq_remove_coverage_all();
+void rb_iseq_remove_coverage_all(void);
 
 /* proc.c */
 const rb_iseq_t *rb_method_iseq(VALUE body);