1 files changed, 2 insertions, 1 deletions
diff --git a/concurrency.c b/concurrency.c
index b45ee08..1c73099 100644
--- a/concurrency.c
+++ b/concurrency.c
@@ -2,6 +2,7 @@
 #include <libc.h>
 #include <bio.h>
 #include <tos.h>
+#include <thread.h>
 
 #include "apl9.h"
 
@@ -161,7 +162,7 @@ Retry:
 	/* Check if the new message is OK according to 'match' */
 	prev = m;
 	Array *matchres = runfunc(match, nil, m->contents);
-	if(GetRank(matchres) != 1 || GetSize(matchres) != 2){
+	if(GetRank(matchres) != 1 || matchres->size != 2){
 		freearray(matchres);
 		goto Retry;
 	}