diff --git a/src/add-ons/media/plugins/au_reader/au_reader.cpp b/src/add-ons/media/plugins/au_reader/au_reader.cpp
index 2f8163b366..c65ef64183 100644
--- a/src/add-ons/media/plugins/au_reader/au_reader.cpp
+++ b/src/add-ons/media/plugins/au_reader/au_reader.cpp
@@ -204,6 +204,7 @@ auReader::Sniff(int32 *streamCount)
 				fFormat.u.raw_audio.format = media_raw_audio_format::B_AUDIO_SHORT;
 				break;
 			case SND_FORMAT_LINEAR_24:
+				// XXX broken
 				fFormat.u.raw_audio.format = media_raw_audio_format::B_AUDIO_INT;
 				break;
 			case SND_FORMAT_LINEAR_32:
@@ -213,8 +214,12 @@ auReader::Sniff(int32 *streamCount)
 				fFormat.u.raw_audio.format = media_raw_audio_format::B_AUDIO_FLOAT;
 				break;
 			case SND_FORMAT_DOUBLE:
+				// XXX broken
 				fFormat.u.raw_audio.format = media_raw_audio_format::B_AUDIO_FLOAT;
 				break;
+			default:
+				TRACE("WavReader::Sniff: unhandled raw format\n");
+				return B_ERROR;
 		}
 		fFormat.u.raw_audio.byte_order = B_MEDIA_BIG_ENDIAN;
 		fFormat.u.raw_audio.buffer_size = fBufferSize;
diff --git a/src/add-ons/media/plugins/wav_reader/WavReaderPlugin.cpp b/src/add-ons/media/plugins/wav_reader/WavReaderPlugin.cpp
index e5e5206774..fb1c460c32 100644
--- a/src/add-ons/media/plugins/wav_reader/WavReaderPlugin.cpp
+++ b/src/add-ons/media/plugins/wav_reader/WavReaderPlugin.cpp
@@ -140,7 +140,7 @@ WavReader::Sniff(int32 *streamCount)
 				}
 				break;
 			default:
-				TRACE("WavReader::Sniff: ignoring chunk 0x%08lx of %lu bytes\n", UINT32(chunk.fourcc), chunk.len);
+				TRACE("WavReader::Sniff: ignoring chunk 0x%08lx of %lu bytes\n", UINT32(chunk.fourcc), UINT32(chunk.len));
 				break;
 		}
 		pos += UINT32(chunk.len);