diff --git a/simgear/sound/sample_group.cxx b/simgear/sound/sample_group.cxx
index e2a2b2c7..4f64768c 100644
--- a/simgear/sound/sample_group.cxx
+++ b/simgear/sound/sample_group.cxx
@@ -147,7 +147,7 @@ void SGSampleGroup::update( double dt ) {
                 ALboolean looping = sample->is_looping() ? AL_TRUE : AL_FALSE;
                 alSourcei( source, AL_LOOPING, looping );
                 alSourcef( source, AL_ROLLOFF_FACTOR, 0.3 );
-                alSourcei( source, AL_SOURCE_RELATIVE, AL_FALSE );
+                alSourcei( source, AL_SOURCE_RELATIVE, AL_TRUE );
                 alSourcePlay( source );
                 testForALError("sample play");
             } else {