diff --git a/CMakeLists.txt b/CMakeLists.txt
index 44a7ea9c..f105237f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -378,6 +378,7 @@ SET(BACKENDS "")
 SET(HAVE_ALSA       0)
 SET(HAVE_OSS        0)
 SET(HAVE_SOLARIS    0)
+SET(HAVE_SNDIO      0)
 SET(HAVE_DSOUND     0)
 SET(HAVE_WINMM      0)
 SET(HAVE_PORTAUDIO  0)