diff --git a/src/modules/module-oss-mmap.c b/src/modules/module-oss-mmap.c
index b80122144..ddf33532f 100644
--- a/src/modules/module-oss-mmap.c
+++ b/src/modules/module-oss-mmap.c
@@ -383,7 +383,7 @@ int pa__init(pa_core *c, pa_module*m) {
     }
 
     u->sample_spec = c->default_sample_spec;
-    if (pa_modargs_get_sample_spec_and_channel_map(ma, &u->sample_spec, &map, PA_CHANNEL_MAP_ALSA) < 0) {
+    if (pa_modargs_get_sample_spec_and_channel_map(ma, &u->sample_spec, &map, PA_CHANNEL_MAP_OSS) < 0) {
         pa_log(__FILE__": failed to parse sample specification or channel map");
         goto fail;
     }
diff --git a/src/modules/module-oss.c b/src/modules/module-oss.c
index eab9a60a2..f6d19544b 100644
--- a/src/modules/module-oss.c
+++ b/src/modules/module-oss.c
@@ -347,7 +347,7 @@ int pa__init(pa_core *c, pa_module*m) {
     mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
 
     ss = c->default_sample_spec;
-    if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
+    if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_OSS) < 0) {
         pa_log(__FILE__": failed to parse sample specification or channel map");
         goto fail;
     }