diff --git a/src/plugins/Check.py b/src/plugins/Check.py
index 9b4abfa71..439d56aff 100644
--- a/src/plugins/Check.py
+++ b/src/plugins/Check.py
@@ -220,8 +220,8 @@ class CheckIntegrity:
                 if father.getGender() == mother.getGender():
                     family.setRelationship("Partners")
                     self.fam_rel.append(family)
-                elif father.getGender() != RelLib.Person.male or \
-                     mother.getGender() != RelLib.Person.female:
+                elif father.getGender() == RelLib.Person.female or \
+                     mother.getGender() == RelLib.Person.male:
                     family.setFather(mother)
                     family.setMother(father)
                     self.fam_rel.append(family)