diff --git a/source/basic.tex b/source/basic.tex
index dac414469e..e5d6564868 100644
--- a/source/basic.tex
+++ b/source/basic.tex
@@ -1858,7 +1858,7 @@
 import M;
 export R::X make();
 namespace R { static int g(X); }
-template<typename T, typename U> void apply(T t, U u) {
+export template<typename T, typename U> void apply(T t, U u) {
   f(t, u);
   g(t);
 }