diff --git a/src/dbus/Qt5DBusMacros.cmake b/src/dbus/Qt5DBusMacros.cmake
index 6617d370a9..17068c5cc0 100644
--- a/src/dbus/Qt5DBusMacros.cmake
+++ b/src/dbus/Qt5DBusMacros.cmake
@@ -73,9 +73,10 @@ endfunction()
 function(QT5_ADD_DBUS_INTERFACES _sources)
     foreach(_current_FILE ${ARGN})
         get_filename_component(_infile ${_current_FILE} ABSOLUTE)
+        get_filename_component(_basename ${_current_FILE} NAME)
         # get the part before the ".xml" suffix
-        string(REGEX REPLACE "(.*[/\\.])?([^\\.]+)\\.xml" "\\2" _basename ${_current_FILE})
         string(TOLOWER ${_basename} _basename)
+        string(REGEX REPLACE "(.*\\.)?([^\\.]+)\\.xml" "\\2" _basename ${_basename})
         qt5_add_dbus_interface(${_sources} ${_infile} ${_basename}interface)
     endforeach()
     set(${_sources} ${${_sources}} PARENT_SCOPE)