diff --git a/include/linux/input.h b/include/linux/input.h
index 57add32..6d5eddb 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -1610,7 +1610,7 @@
 	struct file *effect_owners[];
 };
 
-int input_ff_create(struct input_dev *dev, int max_effects);
+int input_ff_create(struct input_dev *dev, unsigned int max_effects);
 void input_ff_destroy(struct input_dev *dev);
 
 int input_ff_event(struct input_dev *dev, unsigned int type, unsigned int code, int value);