diff --git a/Makefile b/Makefile
index f032158645..bfa5dab4cd 100644
--- a/Makefile
+++ b/Makefile
@@ -273,7 +273,7 @@ $(qapi-modules) $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 qapi-event.c qapi-event.h :\
 $(qapi-modules) $(SRC_PATH)/scripts/qapi-event.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-event.py \
-		$(gen-out-type) -o "." -b -i $<, \
+		$(gen-out-type) -o "." -i $<, \
 		"  GEN   $@")
 qmp-commands.h qmp-marshal.c :\
 $(qapi-modules) $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
diff --git a/scripts/qapi-event.py b/scripts/qapi-event.py
index a7e0033cc1..3e1f4cf0fd 100644
--- a/scripts/qapi-event.py
+++ b/scripts/qapi-event.py
@@ -220,8 +220,8 @@ const char *%(event_enum_name)s_lookup[] = {
 # Start the real job
 
 try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:i:o:",
-                                   ["source", "header", "builtins", "prefix=",
+    opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:i:o:",
+                                   ["source", "header", "prefix=",
                                     "input-file=", "output-dir="])
 except getopt.GetoptError, err:
     print str(err)
@@ -235,7 +235,6 @@ h_file = 'qapi-event.h'
 
 do_c = False
 do_h = False
-do_builtins = False
 
 for o, a in opts:
     if o in ("-p", "--prefix"):
@@ -248,8 +247,6 @@ for o, a in opts:
         do_c = True
     elif o in ("-h", "--header"):
         do_h = True
-    elif o in ("-b", "--builtins"):
-        do_builtins = True
 
 if not do_c and not do_h:
     do_c = True