diff --git a/src/UniformResourceLocator/StreamWrapper/Stream.php b/src/UniformResourceLocator/StreamWrapper/Stream.php
index 84aa56e7..3d104cfc 100644
--- a/src/UniformResourceLocator/StreamWrapper/Stream.php
+++ b/src/UniformResourceLocator/StreamWrapper/Stream.php
@@ -41,7 +41,14 @@ public static function setLocator(ResourceLocatorInterface $locator): void
      */
     public function stream_open(string $uri, string $mode, int $options, ?string &$opened_path): bool
     {
-        $path = $this->findPath($uri);
+        // In write mode, we want to write to the first existing path (should
+        // be a shared location) because fopen will attempts to create the file.
+        // Otherwise, we need to find the first found path, across location.
+        if (in_array($mode, ['w', 'w+', 'a', 'a+', 'x', 'x+'], true)) {
+            $path = $this->findPath($uri, true);
+        } else {
+            $path = $this->findPath($uri);
+        }
 
         if ($path === null) {
             return false;
@@ -49,8 +56,8 @@ public function stream_open(string $uri, string $mode, int $options, ?string &$o
 
         $handle = @fopen($path, $mode);
 
-        // fopen will return false if mode is 'x' and file already exist.
-        // See : https://www.php.net/manual/en/function.fopen
+        // fopen will return false if file is not found or if mode is 'x' and
+        // file already exist. See : https://www.php.net/manual/en/function.fopen
         if ($handle === false) {
             return false;
         }
diff --git a/tests/UniformResourceLocator/StreamWrapper/StreamTest.php b/tests/UniformResourceLocator/StreamWrapper/StreamTest.php
index 57b790bd..1059da66 100644
--- a/tests/UniformResourceLocator/StreamWrapper/StreamTest.php
+++ b/tests/UniformResourceLocator/StreamWrapper/StreamTest.php
@@ -162,17 +162,73 @@ public function testChmod(): void
     }
 
     /**
+     * Test on a file that already exist.
      * @depends testSimpleFile
      */
     public function testFOpen(): void
+    {
+        touch($this->file);
+        $this->assertTrue(file_exists($this->file)); // Make sure file exist, it's the point of the test
+        $this->assertIsResource(fopen($this->file, 'w'));
+        unlink($this->file);
+    }
+
+    /**
+     * Make sure fopen create the file if it doesn't exist.
+     * @depends testSimpleFile
+     */
+    public function testFOpenFileNotExistButWillCreate(): void
+    {
+        $this->assertFalse(file_exists($this->file));
+        $this->assertIsResource(fopen($this->file, 'w'));
+        $this->assertTrue(file_exists($this->file));
+        unlink($this->file);
+    }
+
+    /**
+     * Make sure fopen will return false if the file doesn't exist in readonly
+     * mode. Even if locator return a resource path (with all flag).
+     *
+     * @depends testSimpleFile
+     */
+    public function testFOpenFileNotExist(): void
     {
         // stream_open will trigger an error even if the stream return false.
+        // fopen(bar://test.txt): Failed to open stream: "UserFrosting\UniformResourceLocator\StreamWrapper\Stream::stream_open" call failed
+        // This suppress this error, and allow us to test the return value.
         set_error_handler(function ($no, $str, $file, $line) { // @phpstan-ignore-line
         });
 
-        touch($this->file); // Touch basic file
+        $this->assertFalse(file_exists($this->file));
+        $this->assertFalse(fopen($this->file, 'r'));
+        $this->assertFalse(file_exists($this->file));
+    }
+
+    /**
+     * @depends testSimpleFile
+     */
+    public function testFOpenInvalidPath(): void
+    {
+        // Catch exception
+        set_error_handler(function ($no, $str, $file, $line) { // @phpstan-ignore-line
+        });
+
+        $this->assertFalse(fopen('bar://test.txt', 'w'));
+    }
+
+    /**
+     * fopen will return false if mode is 'x' and file already exist.
+     * @depends testSimpleFile
+     */
+    public function testFOpenFalseReturn(): void
+    {
+        // Catch exception
+        set_error_handler(function ($no, $str, $file, $line) { // @phpstan-ignore-line
+        });
+
+        touch($this->file);
         $this->assertFalse(fopen($this->file, 'x'));
-        unlink($this->file);  // Reset state
+        unlink($this->file);
     }
 
     /**