diff --git a/.gitignore b/.gitignore
index d054a8cb..7f425da8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@
 /.phpunit.cache
 /build/
 /coverage.clover
+.DS_Store
+.idea/*
diff --git a/src/Translatable/Traits/Relationship.php b/src/Translatable/Traits/Relationship.php
index 22832dc5..d1911ff6 100644
--- a/src/Translatable/Traits/Relationship.php
+++ b/src/Translatable/Traits/Relationship.php
@@ -25,7 +25,7 @@ public function getRelationKey(): string
      */
     public function getTranslationModelName(): string
     {
-        return $this->translationModel ?: $this->getTranslationModelNameDefault();
+        return isset($this->translationModel) ? $this->translationModel : $this->getTranslationModelNameDefault();
     }
 
     /**
@@ -55,11 +55,7 @@ public function getTranslationModelNamespace(): ?string
      */
     public function getTranslationRelationKey(): string
     {
-        if ($this->translationForeignKey) {
-            return $this->translationForeignKey;
-        }
-
-        return $this->getForeignKey();
+        return isset($this->translationForeignKey) ? $this->translationForeignKey : $this->getForeignKey();
     }
 
     public function translation(): HasOne
diff --git a/src/Translatable/Translatable.php b/src/Translatable/Translatable.php
index 966fe954..c83c4823 100644
--- a/src/Translatable/Translatable.php
+++ b/src/Translatable/Translatable.php
@@ -174,7 +174,7 @@ public function getDefaultLocale(): ?string
      */
     public function getLocaleKey(): string
     {
-        return $this->localeKey ?: config('translatable.locale_key', 'locale');
+        return isset($this->localeKey) ? $this->localeKey : config('translatable.locale_key', 'locale');
     }
 
     public function getNewTranslation(string $locale): Model