diff --git a/tests/libqtest.c b/tests/libqtest.c
index 225a123649..43be078518 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -187,8 +187,7 @@ static const char *qtest_qemu_binary(void)
     return qemu_bin;
 }
 
-QTestState *qtest_init_without_qmp_handshake(bool use_oob,
-                                             const char *extra_args)
+QTestState *qtest_init_without_qmp_handshake(const char *extra_args)
 {
     QTestState *s;
     int sock, qmpsock, i;
@@ -219,12 +218,12 @@ QTestState *qtest_init_without_qmp_handshake(bool use_oob,
                               "-qtest unix:%s,nowait "
                               "-qtest-log %s "
                               "-chardev socket,path=%s,nowait,id=char0 "
-                              "-mon chardev=char0,mode=control%s "
+                              "-mon chardev=char0,mode=control "
                               "-machine accel=qtest "
                               "-display none "
                               "%s", qemu_binary, socket_path,
                               getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null",
-                              qmp_socket_path, "",
+                              qmp_socket_path,
                               extra_args ?: "");
 
     g_test_message("starting QEMU: %s", command);
@@ -266,7 +265,7 @@ QTestState *qtest_init_without_qmp_handshake(bool use_oob,
 
 QTestState *qtest_init(const char *extra_args)
 {
-    QTestState *s = qtest_init_without_qmp_handshake(false, extra_args);
+    QTestState *s = qtest_init_without_qmp_handshake(extra_args);
     QDict *greeting;
 
     /* Read the QMP greeting and then do the handshake */
diff --git a/tests/libqtest.h b/tests/libqtest.h
index ed88ff99d5..96a6c01352 100644
--- a/tests/libqtest.h
+++ b/tests/libqtest.h
@@ -55,14 +55,12 @@ QTestState *qtest_init(const char *extra_args);
 
 /**
  * qtest_init_without_qmp_handshake:
- * @use_oob: true to have the server advertise OOB support
  * @extra_args: other arguments to pass to QEMU.  CAUTION: these
  * arguments are subject to word splitting and shell evaluation.
  *
  * Returns: #QTestState instance.
  */
-QTestState *qtest_init_without_qmp_handshake(bool use_oob,
-                                             const char *extra_args);
+QTestState *qtest_init_without_qmp_handshake(const char *extra_args);
 
 /**
  * qtest_quit:
diff --git a/tests/qmp-test.c b/tests/qmp-test.c
index 5ba22af6a0..48a4fa791a 100644
--- a/tests/qmp-test.c
+++ b/tests/qmp-test.c
@@ -108,7 +108,7 @@ static void test_qmp_protocol(void)
     QList *capabilities;
     QTestState *qts;
 
-    qts = qtest_init_without_qmp_handshake(false, common_args);
+    qts = qtest_init_without_qmp_handshake(common_args);
 
     /* Test greeting */
     resp = qtest_qmp_receive(qts);
@@ -219,7 +219,7 @@ static void test_qmp_oob(void)
     QList *capabilities;
     QString *qstr;
 
-    qts = qtest_init_without_qmp_handshake(true, common_args);
+    qts = qtest_init_without_qmp_handshake(common_args);
 
     /* Check the greeting message. */
     resp = qtest_qmp_receive(qts);