diff --git a/src/pylorax/__init__.py b/src/pylorax/__init__.py
index 37829da8..f41ea351 100644
--- a/src/pylorax/__init__.py
+++ b/src/pylorax/__init__.py
@@ -138,7 +138,7 @@ class Lorax(BaseLoraxClass):
 
     def run(self, ybo, product, version, release, variant="", bugurl="",
             isfinal=False, workdir=None, outputdir=None, buildarch=None, volid=None,
-            domacboot=True, doupgrade=True, remove_temp=False):
+            domacboot=False, doupgrade=True, remove_temp=False):
 
         assert self._configured
 
diff --git a/src/pylorax/treebuilder.py b/src/pylorax/treebuilder.py
index 2e7c43eb..0f9766b5 100644
--- a/src/pylorax/treebuilder.py
+++ b/src/pylorax/treebuilder.py
@@ -168,7 +168,7 @@ class RuntimeBuilder(object):
 class TreeBuilder(object):
     '''Builds the arch-specific boot images.
     inroot should be the installtree root (the newly-built runtime dir)'''
-    def __init__(self, product, arch, inroot, outroot, runtime, isolabel, domacboot=True, doupgrade=True, templatedir=None):
+    def __init__(self, product, arch, inroot, outroot, runtime, isolabel, domacboot=False, doupgrade=True, templatedir=None):
         # NOTE: if you pass an arg named "runtime" to a mako template it'll
         # clobber some mako internal variables - hence "runtime_img".
         self.vars = DataHolder(arch=arch, product=product, runtime_img=runtime,
diff --git a/src/sbin/livemedia-creator b/src/sbin/livemedia-creator
index c2996c90..d2727d61 100755
--- a/src/sbin/livemedia-creator
+++ b/src/sbin/livemedia-creator
@@ -772,9 +772,9 @@ if __name__ == '__main__':
                          help="Directory to copy the resulting images and iso into. "
                               "Defaults to the temporary working directory")
 
-    parser.add_argument( "--macboot", action="store_true", default=True,
+    parser.add_argument( "--macboot", action="store_true",
                          dest="domacboot")
-    parser.add_argument( "--nomacboot", action="store_false",
+    parser.add_argument( "--nomacboot", action="store_false", default=False,
                          dest="domacboot")
 
     # Group of arguments for appliance creation
diff --git a/src/sbin/lorax b/src/sbin/lorax
index b137f483..8a76ef97 100755
--- a/src/sbin/lorax
+++ b/src/sbin/lorax
@@ -124,9 +124,9 @@ def main(args):
     optional.add_option("--volid", default=None,
             help="volume id", metavar="STRING")
     optional.add_option("--macboot", help="",
-            action="store_true", default=True, dest="domacboot")
+            action="store_true", dest="domacboot")
     optional.add_option("--nomacboot", help="",
-            action="store_false", dest="domacboot")
+            action="store_false", default=False, dest="domacboot")
     optional.add_option("--noupgrade", help="",
             action="store_false", default=True, dest="doupgrade")
     optional.add_option("--logfile", default="./lorax.log",