diff --git a/[refs] b/[refs]
index 822b97b58782..2e83bcf74608 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 108fc82596e3b66b819df9d28c1ebbc9ab5de14c
+refs/heads/master: 5b8fa822b71fa91b17c9fb38bcca31e771f7650d
diff --git a/trunk/tools/virtio/virtio-trace/Makefile b/trunk/tools/virtio/virtio-trace/Makefile
index ef3adfce594c..0d2381633475 100644
--- a/trunk/tools/virtio/virtio-trace/Makefile
+++ b/trunk/tools/virtio/virtio-trace/Makefile
@@ -1,14 +1,13 @@
 CC = gcc
-CFLAGS = -O2 -Wall
-LFLAG = -lpthread
+CFLAGS = -O2 -Wall -pthread
 
 all: trace-agent
 
 .c.o:
-	$(CC) $(CFLAGS) $(LFLAG) -c $^ -o $@
+	$(CC) $(CFLAGS) -c $^ -o $@
 
 trace-agent: trace-agent.o trace-agent-ctl.o trace-agent-rw.o
-	$(CC) $(CFLAGS) $(LFLAG) -o $@ $^
+	$(CC) $(CFLAGS) -o $@ $^
 
 clean:
 	rm -f *.o trace-agent