diff --git a/builders/windows-builder.py b/builders/windows-builder.py
index 4357997..9351b88 100644
--- a/builders/windows-builder.py
+++ b/builders/windows-builder.py
@@ -175,7 +175,7 @@ class WindowsBuilder(Builder):
                                                            Program=program, Protocol='udp', Scope='any'))
                     # Add the file association XML
                     config_dir = os.path.dirname(self.config_path)
-                    with open(os.path.join(config_dir, 'file_associations.xml')) as assoc_file:
+                    with open(os.path.join(config_dir, 'file-associations.xml')) as assoc_file:
                         file_assoc = parse(assoc_file)
                         component.append(file_assoc.getroot())
                 element.append(component)