diff --git a/lib-src/libnyquist/nyquist/nyqsrc/sndwritepa.c b/lib-src/libnyquist/nyquist/nyqsrc/sndwritepa.c
index dad1d812d..f9453a9bb 100644
--- a/lib-src/libnyquist/nyquist/nyqsrc/sndwritepa.c
+++ b/lib-src/libnyquist/nyquist/nyqsrc/sndwritepa.c
@@ -302,7 +302,7 @@ long lookup_format(long format, long mode, long bits, long swap)
         sf_format |= (swap ? SF_ENDIAN_LITTLE : SF_ENDIAN_BIG);
 #endif
 #ifdef XL_LITTLE_ENDIAN
-        sf_format |= (swap ? SF_ENDIAN_LITTLE : SF_ENDIAN_LITTLE);
+        sf_format |= (swap ? SF_ENDIAN_BIG : SF_ENDIAN_LITTLE);
 #endif        
         break;
     case SND_HEAD_OGG: sf_format = SF_FORMAT_OGG; mode = SND_MODE_VORBIS; break;