diff --git a/plugin/exchange.vim b/plugin/exchange.vim
index 9d5e11d..4b659be 100644
--- a/plugin/exchange.vim
+++ b/plugin/exchange.vim
@@ -71,6 +71,8 @@ function! s:exchange_set(type, ...)
 	if !exists('b:exchange')
 		let b:exchange = s:exchange_get(a:type, a:0)
 		let b:exchange_matches = s:highlight(b:exchange)
+		" Tell tpope/vim-repeat that '.' should repeat the Exchange motion
+		silent! call repeat#invalidate()
 	else
 		let exchange1 = b:exchange
 		let exchange2 = s:exchange_get(a:type, a:0)