diff --git a/README.md b/README.md
index fcb3493..d123165 100644
--- a/README.md
+++ b/README.md
@@ -417,7 +417,7 @@ $movie = Tmdb::client('API_KEY')
     ->movies()
     ->details(movie_id: 120); // ?\Kiwilan\Tmdb\Models\Movie
 
-$poster_url = $movie->getPosterUrl(size: PosterSize::W500); // string|null (url to poster)
+$poster_url = $movie->getPosterUrl(size: PosterSize::W500); // string|null (URL to poster)
 ```
 
 These methods are available for `Poster`, `Backdrop`, `Logo`, `Profile` and `Still`.
diff --git a/src/Utils/TmdbImage.php b/src/Utils/TmdbImage.php
index d7286de..d81c072 100644
--- a/src/Utils/TmdbImage.php
+++ b/src/Utils/TmdbImage.php
@@ -32,11 +32,12 @@ public function getUrl(): string
     /**
      * Get the image content, as binary.
      */
-    public function getImage(): string
+    public function getImage(): ?string
     {
         $url = $this->getUrl();
+        $contents = file_get_contents($url);
 
-        return file_get_contents($url);
+        return $contents !== false ? $contents : null;
     }
 
     /**
@@ -45,6 +46,9 @@ public function getImage(): string
     public function saveImage(string $path): bool
     {
         $contents = $this->getImage();
+        if ($contents === null) {
+            return false;
+        }
 
         return file_put_contents($path, $contents) !== false;
     }