diff --git a/examples/bench_04/main.c b/examples/bench_04/main.c
index f898b13596e4483661f33688b6f0a93e76946f65..dd190a5dd95562ae804bb87fdf357c953acccdd0 100644
--- a/examples/bench_04/main.c
+++ b/examples/bench_04/main.c
@@ -8,7 +8,7 @@ int main(int argc, char** argv) {
 
 	const unsigned char pdl[] = 
 	"primitive trivial_loop() {   "
-	"    while(true) synchronous{}"
+	"    while(true) sync {}"
 	"}                            "
 	;
 	Arc_ProtocolDescription * pd = protocol_description_parse(pdl, sizeof(pdl)-1);