diff --git a/bindings/python/ns3modulescan-modular.py b/bindings/python/ns3modulescan-modular.py
index b514cde31..40a96da0c 100644
--- a/bindings/python/ns3modulescan-modular.py
+++ b/bindings/python/ns3modulescan-modular.py
@@ -206,7 +206,7 @@ def scan_callback_classes(module_parser, callback_classes_file):
 
 
 def ns3_module_scan(top_builddir, module_name, headers_map, output_file_name, cflags):
-    module_parser = ModuleParser('ns.%s' % module_name, 'ns3')
+    module_parser = ModuleParser('ns.%s' % module_name.replace('-', '_'), 'ns3')
     module_parser.add_pre_scan_hook(PreScanHook(headers_map, module_name))
     #module_parser.add_post_scan_hook(post_scan_hook)
 
diff --git a/bindings/python/wscript b/bindings/python/wscript
index 561d8b74d..0c9528764 100644
--- a/bindings/python/wscript
+++ b/bindings/python/wscript
@@ -566,7 +566,7 @@ class gen_ns3_compat_pymod_task(Task.TaskBase):
             'and should not be used in newly written code", DeprecationWarning, stacklevel=2)'
         print >> outfile
         for module in self.bld.env['PYTHON_MODULES_BUILT']:
-            print >> outfile, "from ns.%s import *" % (module,)
+            print >> outfile, "from ns.%s import *" % (module.replace('-', '_'))
         outfile.close()
         return 0
 
diff --git a/src/wscript b/src/wscript
index 5176e3153..2bb4cc73d 100644
--- a/src/wscript
+++ b/src/wscript
@@ -176,7 +176,7 @@ def ns3_python_bindings(bld):
 
     pymod = bld.new_task_gen(features='cxx cshlib pyext')
     pymod.source = ['bindings/ns3module.cc']
-    pymod.target = '%s/%s' % (bld.srcnode.find_dir("bindings/python/ns").relpath_gen(bld.path), module)
+    pymod.target = '%s/%s' % (bld.srcnode.find_dir("bindings/python/ns").relpath_gen(bld.path), module.replace('-', '_'))
     pymod.name = 'ns3module_%s' % module
     pymod.uselib_local = "ns3"
     if pymod.env['ENABLE_STATIC_NS3']: