diff --git a/ScopedLock.h b/ScopedLock.h
index 0ba3c1b1d..fb3041c46 100644
--- a/ScopedLock.h
+++ b/ScopedLock.h
@@ -14,11 +14,11 @@ public:
 	ScopedLock(boost::recursive_mutex &mutex) :
 		mHolder(new boost::interprocess::scoped_lock<boost::recursive_mutex>(mutex))
 	{ ; }
-	void lock(void) const
+	void lock() const
 	{
 		mHolder->lock();
 	}
-	void unlock(void) const
+	void unlock() const
 	{
 		mHolder->unlock();
 	}
diff --git a/uint256.h b/uint256.h
index 89fdfcacc..f53bcee50 100644
--- a/uint256.h
+++ b/uint256.h
@@ -371,7 +371,7 @@ public:
 		return sizeof(pn);
 	}
 
-	void zero(void)
+	void zero()
 	{
 		memset(&pn[0], 0, sizeof(pn));
 	}