diff --git a/repos/dde_bsd/src/test/audio_in/main.cc b/repos/dde_bsd/src/test/audio_in/main.cc
index c8bc2b61e7..fb10be5c2d 100644
--- a/repos/dde_bsd/src/test/audio_in/main.cc
+++ b/repos/dde_bsd/src/test/audio_in/main.cc
@@ -36,6 +36,12 @@ class Recording
 {
 	private:
 
+		/*
+		 * Noncopyable
+		 */
+		Recording(Recording const &);
+		Recording &operator = (Recording const &);
+
 		Genode::Signal_handler<Recording>  _record_progress;
 		Genode::Signal_handler<Recording>  _record_overrun;
 
@@ -58,7 +64,7 @@ class Recording
 
 			for (int c = 0; c < CHANNELS; c++) {
 				float *out = op[c]->content();
-				for (int i = 0; i < Audio_in::PERIOD; i++) {
+				for (int i = 0; i < (int)Audio_in::PERIOD; i++) {
 					out[i] = in[i];
 				}
 			}
diff --git a/repos/dde_bsd/src/test/audio_in/target.mk b/repos/dde_bsd/src/test/audio_in/target.mk
index f126388b8d..195fcc4e82 100644
--- a/repos/dde_bsd/src/test/audio_in/target.mk
+++ b/repos/dde_bsd/src/test/audio_in/target.mk
@@ -1,5 +1,3 @@
 TARGET = test-audio_in
 SRC_CC = main.cc
 LIBS   = base
-
-CC_CXX_WARN_STRICT =