diff --git a/quixote/ptl/ptl_compile.py b/quixote/ptl/ptl_compile.py
index 8afcada..47778f9 100644
--- a/quixote/ptl/ptl_compile.py
+++ b/quixote/ptl/ptl_compile.py
@@ -9,8 +9,8 @@ import imp
 import struct
 import importlib.util
 import py_compile
-from .ptl_import import PTL_EXT, PTLFileLoader
-from .ptl_parse import parse
+from quixote.ptl.ptl_import import PTL_EXT, PTLFileLoader
+from quixote.ptl.ptl_parse import parse
 
 
 def ptl_compile(file, cfile, dfile=None, doraise=False, optimize=-1):
@@ -49,7 +49,7 @@ def ptl_compile(file, cfile, dfile=None, doraise=False, optimize=-1):
     loader = PTLFileLoader('<ptl_compile>', file)
     source_bytes = loader.get_data(file)
     try:
-        code = loader.source_to_code(None, source_bytes, dfile or file,
+        code = loader.source_to_code(source_bytes, dfile or file,
                                      _optimize=optimize)
     except Exception as err:
         py_exc = py_compile.PyCompileError(err.__class__, err, dfile or file)
diff --git a/quixote/ptl/ptl_import.py b/quixote/ptl/ptl_import.py
index f17782d..0c9e4df 100644
--- a/quixote/ptl/ptl_import.py
+++ b/quixote/ptl/ptl_import.py
@@ -10,7 +10,7 @@ PTL_EXT = ".ptl"
 
 class PTLFileLoader(SourceFileLoader):
     @staticmethod
-    def source_to_code(self, data, path, *, _optimize=-1):
+    def source_to_code(data, path, *, _optimize=-1):
         node = parse(data, path)
         return compile(node, path, 'exec', dont_inherit=True,
                        optimize=_optimize)