diff --git a/.github/spellcheck-wordlist.txt b/.github/spellcheck-wordlist.txt
index 17a756669..20fab1fef 100644
--- a/.github/spellcheck-wordlist.txt
+++ b/.github/spellcheck-wordlist.txt
@@ -184,6 +184,7 @@ libldac
 libopenaptx
 LLAC
 MPF
+MPS
 mtx
 ncurses
 nmemb
diff --git a/src/utils.c b/src/utils.c
index 85335ba59..9eedd568b 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -171,6 +171,8 @@ const char *aacdec_strerror(AAC_DECODER_ERROR err) {
 		return "Success";
 	case AAC_DEC_OUT_OF_MEMORY:
 		return "Out of memory";
+	case AAC_DEC_UNKNOWN:
+		return "Unknown error";
 	case AAC_DEC_TRANSPORT_SYNC_ERROR:
 		return "Transport sync error";
 	case AAC_DEC_NOT_ENOUGH_BITS:
@@ -197,6 +199,8 @@ const char *aacdec_strerror(AAC_DECODER_ERROR err) {
 		return "Unsupported parameter";
 	case AAC_DEC_NEED_TO_RESTART:
 		return "Restart required";
+	case AAC_DEC_OUTPUT_BUFFER_TOO_SMALL:
+		return "Output buffer too small";
 	case AAC_DEC_TRANSPORT_ERROR:
 		return "Transport error";
 	case AAC_DEC_PARSE_ERROR:
@@ -264,14 +268,15 @@ const char *aacenc_strerror(AACENC_ERROR err) {
 		return "Transport library initialization error";
 	case AACENC_INIT_META_ERROR:
 		return "Metadata library initialization error";
+	case AACENC_INIT_MPS_ERROR:
+		return "MPS library initialization error";
 	case AACENC_ENCODE_ERROR:
 		return "Encoding error";
 	case AACENC_ENCODE_EOF:
 		return "End of file";
-	default:
-		debug("Unknown error code: %#x", err);
-		return "Unknown error";
 	}
+	debug("Unknown error code: %#x", err);
+	return "Unknown error";
 }
 #endif
 
@@ -322,12 +327,13 @@ const char *lc3plus_strerror(LC3PLUS_Error err) {
 		return "Invalid cutoff frequency";
 	case LC3PLUS_PADDING_ERROR:
 		return "Padding error";
+	case LC3PLUS_LFE_MODE_NOT_SUPPORTED:
+		return "LFE not supported";
 	case FRAMESIZE_ERROR:
 		return "Framesize error";
-	default:
-		debug("Unknown error code: %#x", err);
-		return "Unknown error";
 	}
+	debug("Unknown error code: %#x", err);
+	return "Unknown error";
 }
 #endif
 
@@ -400,10 +406,9 @@ const char *ldacBT_strerror(int err) {
 		return "EQMID limited";
 	case LDACBT_ERR_DEC_CONFIG_UPDATED:
 		return "Configuration updated";
-	default:
-		debug("Unknown error code: %#x (API: %u, handle: %u, block: %u)",
-				err, LDACBT_API_ERR(err), LDACBT_HANDLE_ERR(err), LDACBT_BLOCK_ERR(err));
-		return "Unknown error";
 	}
+	debug("Unknown error code: %#x (API: %u, handle: %u, block: %u)",
+			err, LDACBT_API_ERR(err), LDACBT_HANDLE_ERR(err), LDACBT_BLOCK_ERR(err));
+	return "Unknown error";
 }
 #endif