diff --git a/CMakeLists.txt b/CMakeLists.txt
index bf0a3d6b4..7d96a2452 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -206,6 +206,14 @@ configure_file(
     ${CMAKE_BINARY_DIR}/include/qtglobal.h
 )
 
+find_package(PythonInterp)
+set_package_properties(PythonInterp PROPERTIES
+    PURPOSE "UI class maps generator script"
+    DESCRIPTION "Programming language that lets you work quickly"
+    URL "https://www.python.org/"
+    TYPE REQUIRED
+)
+
 find_package(OpenSSL)
 set_package_properties(OpenSSL PROPERTIES
     PURPOSE "Required for HTTPS support"
diff --git a/cmake/modules/KatieBuildMacros.cmake b/cmake/modules/KatieBuildMacros.cmake
index 7fbafbdbf..7590de941 100644
--- a/cmake/modules/KatieBuildMacros.cmake
+++ b/cmake/modules/KatieBuildMacros.cmake
@@ -29,7 +29,7 @@ set(KATIE_QDBUSXML2CPP "qdbusxml2cpp")
 
 macro(KATIE_GENERATE_MAP SUBDIR KEYWORD)
     execute_process(
-        COMMAND ${CMAKE_SOURCE_DIR}/scripts/genmap.py ${SUBDIR} ${KEYWORD}
+        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/scripts/genmap.py ${SUBDIR} ${KEYWORD}
         WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
         RESULT_VARIABLE genmap_result
         ERROR_VARIABLE genmap_error
diff --git a/scripts/genmap.py b/scripts/genmap.py
index 6a578330c..6d5a5b083 100755
--- a/scripts/genmap.py
+++ b/scripts/genmap.py
@@ -29,4 +29,7 @@ mapdata += '\n#endif\n'
 
 sys.stderr.write('-- Writing: %s\n' % os.path.basename(mapoutput))
 with open(mapoutput, 'wb') as f:
-    f.write(mapdata)
\ No newline at end of file
+    if sys.version_info[0] == 3:
+        f.write(bytes(mapdata, 'utf-8'))
+    else:
+        f.write(mapdata)
\ No newline at end of file