diff --git a/src/pypdfium2/_library_scope.py b/src/pypdfium2/_library_scope.py
index d66daf21e..54c5cbb85 100644
--- a/src/pypdfium2/_library_scope.py
+++ b/src/pypdfium2/_library_scope.py
@@ -10,6 +10,7 @@
 def init_lib():
     assert not pdfium_i.LIBRARY_AVAILABLE
     if pdfium_i.DEBUG_AUTOCLOSE:
+        # FIXME never shown, because DEBUG_AUTOCLOSE can only be set on the caller side after pypdfium2 has been imported...
         print("Initialize PDFium (auto)", file=sys.stderr)
     
     # PDFium init API may change in the future: https://crbug.com/pdfium/1446
diff --git a/tests/test_misc.py b/tests/test_misc.py
index 739fe9e98..33e72c173 100644
--- a/tests/test_misc.py
+++ b/tests/test_misc.py
@@ -40,6 +40,7 @@ def _filter(prefix, skips=[], type=int):
 BitmapNsp = _filter("FPDFBitmap_", [pdfium_c.FPDFBitmap_Unknown])
 PageObjNsp = _filter("FPDF_PAGEOBJ_")
 ErrorMapping = pdfium_i.ErrorToStr
+# FIXME this will cause an erroneous test failure when using the reference bindings with a non-XFA build
 if "XFA" in PDFIUM_INFO.flags:
     ErrorMapping.update(pdfium_i.XFAErrorToStr)