--- pym/portage/dep.py	(wersja 9150)
+++ pym/portage/dep.py	(kopia robocza)
@@ -472,6 +472,7 @@ 
 	global _invalid_atom_chars_regexp
 	if _invalid_atom_chars_regexp.search(atom):
 		return 0
+	atom = remove_slot(atom)
 	if allow_blockers and atom.startswith("!"):
 		atom = atom[1:]
 	try: