Index: tests/linking/io-acquire.cfa
===================================================================
--- tests/linking/io-acquire.cfa	(revision ecfd7589e4796949fcc35b475a024d4acda6e636)
+++ tests/linking/io-acquire.cfa	(revision fe8c31e75e28439cc4247390c8486e86cf849e71)
@@ -17,12 +17,13 @@
 #include <fstream.hfa>
 #include <stdlib.hfa>
+#include <mutex_stmt.hfa>
 
 int main() {
 	int i;
 	if(threading_enabled()) {
-		stdout | acquire | "YES";
+		mutex( stdout ) stdout | "YES";
 		stdin | i;
 	} else {
-		stdout | acquire | "NO";
+		mutex( stdout ) stdout | "NO";
 		stdin | i;
 	}