diff --git a/configure.ac b/configure.ac
index 5120b0fd25..225212f00b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1805,6 +1805,7 @@ AM_CONDITIONAL(USE_COG, false)
 AM_CONDITIONAL(USE_CURL, false)
 AM_CONDITIONAL(USE_DC1394, false)
 AM_CONDITIONAL(USE_DECKLINK, false)
+AM_CONDITIONAL(DECKLINK_OSX, false)
 AM_CONDITIONAL(USE_DIRECTFB, false)
 AM_CONDITIONAL(USE_WAYLAND, false)
 AM_CONDITIONAL(USE_DIRAC, false)