diff --git a/doc/rtd_build.py b/doc/rtd_build.py
index bbca8da2f..2a0a718c2 100644
--- a/doc/rtd_build.py
+++ b/doc/rtd_build.py
@@ -2,13 +2,6 @@
 import sys
 import subprocess
 
-
-if os.environ.get("READTHEDOCS") != "True":
-    print("This setup.py is supposed to be used only to build documentation in Read the Docs.")
-    print("Use cmake && make doc instead to build documentation locally")
-    sys.exit(1)
-
-
 DIR = os.path.abspath(os.path.dirname(__file__))
 
 
@@ -40,37 +33,43 @@ def generate_bindings_from_dir(in_dir, out_dir):
                                                                ] + swig_includes + [os.path.join(in_dir, in_file)], cwd=DIR, check=True)
 
 
-# configure the .in files
-configure("Doxyfile.in", "Doxyfile", {
-          "@CMAKE_SOURCE_DIR@": os.path.join(DIR, "..")})
-configure("conf.py.in", "conf.py", {
-          "@CMAKE_CURRENT_BINARY_DIR@": DIR, "@AUTOAPI_EXTENSION@": "\'autoapi.extension\',"})
-
-# In place replace autodoc directives with autoapidoc directives.
-# Our readthedocs workflow uses autoapidoc instead of autodoc because
-# it is able to parse code generated by swig without including the
-# module -> therefore there is no need for a full build in order to
-# generate python docs.
-for in_file in os.listdir(os.path.join(DIR + "/api/python")):
-    if in_file.endswith(".rst"):
-        file = os.path.join("api/python/", in_file)
-        configure(file, file, {"autoclass": "autoapiclass"})
-
-
-# run doxygen manually
-print("Running doxygen...")
-subprocess.run(["doxygen"], cwd=DIR, check=True)
-
-
-# run swig manually to generate Python bindings which are then used to generate Python API docs
-print("Running SWIG...")
-
-# libdnf5
-# Generate bindings outside of doc dir, into their python bindings dir. This has to match with path provided to autoapi_dirs in conf.py.in
-generate_bindings_from_dir(os.path.join(
-    DIR + "/../bindings/libdnf5"), os.path.join(DIR + "/../bindings/python3/libdnf5"))
-
-# libdnf5-cli
-generate_bindings_from_dir(os.path.join(DIR + "/../bindings/libdnf5_cli"),
-                           os.path.join(DIR + "/../bindings/python3/libdnf5_cli"))
-
+def main():
+    # configure the .in files
+    configure("Doxyfile.in", "Doxyfile", {
+              "@CMAKE_SOURCE_DIR@": os.path.join(DIR, "..")})
+    configure("conf.py.in", "conf.py", {
+              "@CMAKE_CURRENT_BINARY_DIR@": DIR, "@AUTOAPI_EXTENSION@": "\'autoapi.extension\',"})
+
+    # In place replace autodoc directives with autoapidoc directives.
+    # Our readthedocs workflow uses autoapidoc instead of autodoc because
+    # it is able to parse code generated by swig without including the
+    # module -> therefore there is no need for a full build in order to
+    # generate python docs.
+    for in_file in os.listdir(os.path.join(DIR + "/api/python")):
+        if in_file.endswith(".rst"):
+            file = os.path.join("api/python/", in_file)
+            configure(file, file, {"autoclass": "autoapiclass"})
+
+    # run doxygen manually
+    print("Running doxygen...")
+    subprocess.run(["doxygen"], cwd=DIR, check=True)
+
+    # run swig manually to generate Python bindings which are then used to generate Python API docs
+    print("Running SWIG...")
+
+    # libdnf5
+    # Generate bindings outside of doc dir, into their python bindings dir. This has to match with path provided to autoapi_dirs in conf.py.in
+    generate_bindings_from_dir(os.path.join(
+        DIR + "/../bindings/libdnf5"), os.path.join(DIR + "/../bindings/python3/libdnf5"))
+
+    # libdnf5-cli
+    generate_bindings_from_dir(os.path.join(DIR + "/../bindings/libdnf5_cli"),
+                               os.path.join(DIR + "/../bindings/python3/libdnf5_cli"))
+
+
+if __name__ == "__main__":
+    if os.environ.get("READTHEDOCS") != "True":
+        print("This setup.py is supposed to be used only to build documentation in Read the Docs.")
+        print("Use cmake && make doc instead to build documentation locally")
+        sys.exit(1)
+    main()