diff --git a/api/docs/tutorial.dox b/api/docs/tutorial.dox
index 2d5420b8801..53d6609b2e9 100644
--- a/api/docs/tutorial.dox
+++ b/api/docs/tutorial.dox
@@ -300,8 +300,8 @@ event_basic_block(void *drcontext, void *tag, instrlist_t *bb,
     dr_mutex_unlock(as_built_lock);
 
 +     /* insert clean call */
-+     dr_insert_clean_call(drcontext, bb, instrlist_first(bb), clean_call, false, 1,
-+                          OPND_CREATE_INT32(num_instructions));
++     dr_insert_clean_call(drcontext, bb, instrlist_first(bb), (void *)clean_call,
++                          false, 1, OPND_CREATE_INT32(num_instructions));
 +
     return DR_EMIT_DEFAULT;
 }