diff --git a/commands/sdiffstore.md b/commands/sdiffstore.md
index 23cd59153..70bc8a0b1 100644
--- a/commands/sdiffstore.md
+++ b/commands/sdiffstore.md
@@ -1,7 +1,7 @@
 This command is equal to `SDIFF`, but instead of returning the resulting set, it
 is stored in `destination`.
 
-If `destination` already exists, it is overwritten.
+If `destination` already exists, it is overwritten (when the difference is nonempty) or deleted (when the difference is empty)
 
 @examples