diff --git a/mini_al.h b/mini_al.h
index 622c2527..ca1c594a 100644
--- a/mini_al.h
+++ b/mini_al.h
@@ -18489,6 +18489,7 @@ mal_result mal_device_init_fd__audio4(mal_context* pContext, const mal_device_co
     }
 
     if (deviceType == mal_device_type_capture) {
+        pDevice->audio4.fdCapture                  = fd;
         pDevice->capture.internalFormat             = internalFormat;
         pDevice->capture.internalChannels           = internalChannels;
         pDevice->capture.internalSampleRate         = internalSampleRate;
@@ -18496,6 +18497,7 @@ mal_result mal_device_init_fd__audio4(mal_context* pContext, const mal_device_co
         pDevice->capture.internalBufferSizeInFrames = internalBufferSizeInFrames;
         pDevice->capture.internalPeriods            = internalPeriods;
     } else {
+        pDevice->audio4.fdPlayback                 = fd;
         pDevice->playback.internalFormat             = internalFormat;
         pDevice->playback.internalChannels           = internalChannels;
         pDevice->playback.internalSampleRate         = internalSampleRate;
diff --git a/tests/mal_blocking.c b/tests/mal_blocking.c
index c93f3fca..a58355e7 100644
--- a/tests/mal_blocking.c
+++ b/tests/mal_blocking.c
@@ -12,7 +12,7 @@ int main(int argc, char** argv)
     (void)argv;
 
     mal_result result;
-    mal_backend backend = mal_backend_oss;
+    mal_backend backend = mal_backend_audio4;
 
     mal_device_config deviceConfig = mal_device_config_init(mal_device_type_playback);
     deviceConfig.playback.format = mal_format_f32;
@@ -21,7 +21,7 @@ int main(int argc, char** argv)
     //deviceConfig.bufferSizeInMilliseconds = 80;
     deviceConfig.periods = 2;
 
-#if 0
+#if 1
     /* Playback */
     mal_device device;
     result = mal_device_init_ex(&backend, 1, NULL, &deviceConfig, &device);