diff --git a/audio/Makefile b/audio/Makefile
index f2d9a339811..676049f7482 100644
--- a/audio/Makefile
+++ b/audio/Makefile
@@ -231,6 +231,7 @@
      SUBDIR += sidplay
      SUBDIR += siren
      SUBDIR += snack
+     SUBDIR += sndiortp
      SUBDIR += solfege
      SUBDIR += sonata
      SUBDIR += sound-theme-freedesktop