diff --git a/build.py b/build.py
index 8bf846cc..849a8fda 100755
--- a/build.py
+++ b/build.py
@@ -814,7 +814,7 @@ def _doDox(arg):
         os.environ['DOXYGEN'] = doxCmd
         os.environ['WX_SKIP_DOXYGEN_VERSION_CHECK'] = '1'
         pwd = pushDir(posixjoin(wxDir(), 'docs/doxygen'))
-        cmd = './regen.sh %s' % arg
+        cmd = 'bash ./regen.sh %s' % arg
     runcmd(cmd)