diff --git a/sqlite/dial.go b/sqlite/dial.go
index 30fb852..007358b 100644
--- a/sqlite/dial.go
+++ b/sqlite/dial.go
@@ -370,9 +370,11 @@ func createDial(ctx context.Context, tx *Tx, dial *wtf.Dial) error {
 	dial.CreatedAt = tx.now
 	dial.UpdatedAt = dial.CreatedAt
 
-	// Perform basic field validation.
+	// Perform basic field validation & ensure user exists.
 	if err := dial.Validate(); err != nil {
 		return err
+	} else if _, err := findUserByID(ctx, tx, dial.UserID); err != nil {
+		return err
 	}
 
 	// Insert row into database.