diff --git a/src/event/ServerSocket.hxx b/src/event/ServerSocket.hxx
index 84f3534e7..0991bbed1 100644
--- a/src/event/ServerSocket.hxx
+++ b/src/event/ServerSocket.hxx
@@ -73,7 +73,6 @@ public:
 	 * Throws #std::runtime_error on error.
 	 *
 	 * @param port the TCP port
-	 * @param error location to store the error occurring
 	 */
 	void AddPort(unsigned port);
 
@@ -85,7 +84,6 @@ public:
 	 *
 	 * @param hostname the host name to be resolved
 	 * @param port the TCP port
-	 * @param error location to store the error occurring
 	 */
 	void AddHost(const char *hostname, unsigned port);
 
@@ -95,7 +93,6 @@ public:
 	 * Throws #std::runtime_error on error.
 	 *
 	 * @param path the absolute socket path
-	 * @param error location to store the error occurring
 	 */
 	void AddPath(AllocatedPath &&path);
 
diff --git a/src/pcm/Resampler.hxx b/src/pcm/Resampler.hxx
index 37cc9ef1d..dbf9e53dd 100644
--- a/src/pcm/Resampler.hxx
+++ b/src/pcm/Resampler.hxx
@@ -42,7 +42,6 @@ public:
 	 * modify the object to enforce another input format (however,
 	 * it may not request a different input sample rate)
 	 * @param new_sample_rate the requested output sample rate
-	 * @param error location to store the error
 	 * @return the format of outgoing data
 	 */
 	virtual AudioFormat Open(AudioFormat &af,