diff --git a/lib/content_encoding.c b/lib/content_encoding.c
index 3d061375c..c2ba26972 100644
--- a/lib/content_encoding.c
+++ b/lib/content_encoding.c
@@ -546,8 +546,12 @@ static CURLcode brotli_map_error(BrotliDecoderErrorCode be)
   case BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS:
   case BROTLI_DECODER_ERROR_FORMAT_PADDING_1:
   case BROTLI_DECODER_ERROR_FORMAT_PADDING_2:
+#ifdef BROTLI_DECODER_ERROR_COMPOUND_DICTIONARY
   case BROTLI_DECODER_ERROR_COMPOUND_DICTIONARY:
+#endif
+#ifdef BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET
   case BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET:
+#endif
   case BROTLI_DECODER_ERROR_INVALID_ARGUMENTS:
     return CURLE_BAD_CONTENT_ENCODING;
   case BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: