diff --git a/src/eval.c b/src/eval.c
index 0477222..a3bf58d 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -340,6 +340,7 @@
     {VV_NAME("scrollstart",	 VAR_STRING), 0},
     {VV_NAME("swapname",	 VAR_STRING), VV_RO},
     {VV_NAME("swapchoice",	 VAR_STRING), 0},
+    {VV_NAME("swapcommand",	 VAR_STRING), VV_RO},
 };
 
 /* shorthand */