diff --git a/src/Adapter.php b/src/Adapter.php
index c8529f2..407d092 100644
--- a/src/Adapter.php
+++ b/src/Adapter.php
@@ -81,12 +81,10 @@ public function write($path, $contents, Config $config)
 
         $response = $this->normalizeResponse($response);
 
-        if (false === $response) {
-            return false;
+        if (false !== $response) {
+            $this->setContentType($path, $contents);
         }
 
-        $this->setContentType($path, $contents);
-
         return $response;
     }
 
@@ -108,12 +106,10 @@ public function writeStream($path, $resource, Config $config)
 
         $response = $this->normalizeResponse($response);
 
-        if (false === $response) {
-            return false;
+        if (false !== $response) {
+            $this->setContentType($path, stream_get_contents($resource));
         }
 
-        $this->setContentType($path, stream_get_contents($resource));
-
         return $response;
     }
 
@@ -135,12 +131,10 @@ public function update($path, $contents, Config $config)
 
         $response = $this->normalizeResponse($response);
 
-        if (false === $response) {
-            return false;
+        if (false !== $response) {
+            $this->setContentType($path, $contents);
         }
 
-        $this->setContentType($path, $contents);
-
         return $response;
     }
 
@@ -162,12 +156,10 @@ public function updateStream($path, $resource, Config $config)
 
         $response = $this->normalizeResponse($response);
 
-        if (false === $response) {
-            return false;
+        if (false !== $response) {
+            $this->setContentType($path, stream_get_contents($resource));
         }
 
-        $this->setContentType($path, stream_get_contents($resource));
-
         return $response;
     }