diff --git a/src/Sound/VoiceSynthesizer.cxx b/src/Sound/VoiceSynthesizer.cxx
index be1ecae85..408e3b990 100644
--- a/src/Sound/VoiceSynthesizer.cxx
+++ b/src/Sound/VoiceSynthesizer.cxx
@@ -16,6 +16,9 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
+
+#include <utility>
+
 #include "VoiceSynthesizer.hxx"
 #include <Main/globals.hxx>
 #include <Main/fg_props.hxx>
@@ -127,7 +130,7 @@ SGSoundSample * FLITEVoiceSynthesizer::synthesize(const std::string & text, doub
     reinterpret_cast<unsigned char*>( data ),
     free
   };
-  return new SGSoundSample(buf,
+  return new SGSoundSample(std::move(buf),
                            count * sizeof(short),
                            rate,
                            SG_SAMPLE_MONO16);
diff --git a/src/Sound/beacon.cxx b/src/Sound/beacon.cxx
index fde5e3c66..591a35a5e 100644
--- a/src/Sound/beacon.cxx
+++ b/src/Sound/beacon.cxx
@@ -19,8 +19,9 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <cstring>
+#include <utility>
 
 #include "beacon.hxx"
 
@@ -68,7 +69,8 @@ bool FGBeacon::init() {
     }
 
     try {
-        inner = new SGSoundSample( inner_buf, INNER_SIZE, BYTES_PER_SECOND );
+        inner = new SGSoundSample( std::move(inner_buf),
+                                   INNER_SIZE, BYTES_PER_SECOND );
         inner->set_reference_dist( 10.0 );
         inner->set_max_dist( 20.0 );
 
@@ -88,7 +90,8 @@ bool FGBeacon::init() {
         ptr += MIDDLE_DIT_LEN;
         memcpy( ptr, middle_dah, MIDDLE_DAH_LEN );
 
-        middle = new SGSoundSample( middle_buf, MIDDLE_SIZE, BYTES_PER_SECOND);
+        middle = new SGSoundSample( std::move(middle_buf),
+                                    MIDDLE_SIZE, BYTES_PER_SECOND );
         middle->set_reference_dist( 10.0 );
         middle->set_max_dist( 20.0 );
 
@@ -103,7 +106,8 @@ bool FGBeacon::init() {
         ptr += OUTER_DAH_LEN;
         memcpy( ptr, outer_dah, OUTER_DAH_LEN );
 
-        outer = new SGSoundSample( outer_buf, OUTER_SIZE, BYTES_PER_SECOND );
+        outer = new SGSoundSample( std::move(outer_buf), OUTER_SIZE,
+                                   BYTES_PER_SECOND );
         outer->set_reference_dist( 10.0 );
         outer->set_max_dist( 20.0 );
     } catch ( sg_io_exception &e ) {
diff --git a/src/Sound/morse.cxx b/src/Sound/morse.cxx
index ffef13c59..eefd1f094 100644
--- a/src/Sound/morse.cxx
+++ b/src/Sound/morse.cxx
@@ -26,8 +26,9 @@
 
 #include <simgear/sound/sample.hxx>
 
+#include <cstdlib>
 #include <cstring>
-#include <stdlib.h>
+#include <utility>
 
 static const char DI = '1';
 static const char DIT = '1';
@@ -235,7 +236,7 @@ SGSoundSample *FGMorse::make_ident( const std::string& id, const int freq ) {
     buf_ptr += SPACE_SIZE;
 
     // 4. create the simple sound and return
-    SGSoundSample *sample = new SGSoundSample( buffer, length,
+    SGSoundSample *sample = new SGSoundSample( std::move(buffer), length,
                                                BYTES_PER_SECOND );
 
     sample->set_reference_dist( 10.0 );