diff --git a/libs/ardour/mididm.cc b/libs/ardour/mididm.cc
index 0123b0847f..53cf5d71b6 100644
--- a/libs/ardour/mididm.cc
+++ b/libs/ardour/mididm.cc
@@ -50,7 +50,7 @@ int MIDIDM::process (pframes_t nframes, PortEngine &pe, void *midi_in, void *mid
 
 	/* process incoming */
 	const pframes_t nevents = pe.get_midi_event_count (midi_in);
-#if 1 //DEBUG
+#if 0 //DEBUG
 		printf("MIDI SEND: @%8"PRId64", recv: %d systime:%"PRId64"\n", _monotonic_cnt, nevents, g_get_monotonic_time());
 #endif
 	for (pframes_t n = 0; n < nevents; ++n) {
@@ -69,7 +69,7 @@ int MIDIDM::process (pframes_t nframes, PortEngine &pe, void *midi_in, void *mid
 		const int64_t tc = (_monotonic_cnt + timestamp) & MASK;
 		const int64_t ti = ((buf[2] & 0x7f) << 7) | (buf[1] & 0x7f);
 		const int64_t tdiff = (MODX + tc - ti) % MODX;
-#if 1 //DEBUG
+#if 0 //DEBUG
 		printf("MIDI DELAY: # %5"PRId64" %5"PRId64" [samples] (%5"PRId64" - %8"PRId64") @(%5"PRId64" + %d)\n",
 				_cnt_total, tdiff, tc, ti, _monotonic_cnt, timestamp);
 #endif
diff --git a/libs/backends/alsa/alsa_audiobackend.cc b/libs/backends/alsa/alsa_audiobackend.cc
index c9b74058ab..4fd83d6714 100644
--- a/libs/backends/alsa/alsa_audiobackend.cc
+++ b/libs/backends/alsa/alsa_audiobackend.cc
@@ -1386,7 +1386,6 @@ AlsaAudioBackend::main_process_thread ()
 				PBD::error << _("AlsaAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
 				break;
 			}
-			int gop = 0;
 			while (nr >= (long)_samples_per_period) {
 				uint32_t i = 0;
 				clock1 = g_get_monotonic_time();
@@ -1459,10 +1458,6 @@ AlsaAudioBackend::main_process_thread ()
 				clock2 = g_get_monotonic_time();
 				const int64_t elapsed_time = clock2 - clock1;
 				_dsp_load = elapsed_time / (float) nomial_time;
-				++gop;
-			}
-			if (gop != 1) {
-				fprintf(stderr, "grouped audio periods %d != 1\n", gop);
 			}
 
 			if (xrun && (_pcmi->capt_xrun() > 0 || _pcmi->play_xrun() > 0)) {