diff --git a/source/enemy/nanemone.h b/source/enemy/nanemone.h
index 27835d664..d298d6cf7 100644
--- a/source/enemy/nanemone.h
+++ b/source/enemy/nanemone.h
@@ -50,7 +50,7 @@ protected:
 
 	enum
 	{
-		SPIKE_RADIUS = 20,
+		SPIKE_RADIUS = 15,
 	};
 };