diff --git modules/color/color.install modules/color/color.install
index 4bb3e4c..a690f5a 100644
--- modules/color/color.install
+++ modules/color/color.install
@@ -13,27 +13,27 @@ function color_requirements($phase) {
     // Check for the PHP GD library.
     if (function_exists('imagegd2')) {
       $info = gd_info();
-      $requirements['gd'] = array(
+      $requirements['color_gd'] = array(
         'value' => $info['GD Version'],
       );
 
       // Check for PNG support.
       if (function_exists('imagecreatefrompng')) {
-        $requirements['gd']['severity'] = REQUIREMENT_OK;
+        $requirements['color_gd']['severity'] = REQUIREMENT_OK;
       }
       else {
-        $requirements['gd']['severity'] = REQUIREMENT_ERROR;
-        $requirements['gd']['description'] = t('The GD library for PHP is enabled, but was compiled without PNG support. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/ref.image.php'));
+        $requirements['color_gd']['severity'] = REQUIREMENT_ERROR;
+        $requirements['color_gd']['description'] = t('The GD library for PHP is enabled, but was compiled without PNG support. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/ref.image.php'));
       }
     }
     else {
-      $requirements['gd'] = array(
+      $requirements['color_gd'] = array(
         'value' => t('Not installed'),
         'severity' => REQUIREMENT_ERROR,
-        'description' => t('The GD library for PHP is missing or outdated. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/ref.image.php')),
+        'description' => t('The GD library for PHP is missing or outdated. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/book.image.php')),
       );
     }
-    $requirements['gd']['title'] = t('GD library');
+    $requirements['color_gd']['title'] = t('GD library PNG support');
   }
 
   return $requirements;
diff --git modules/image/image.install modules/image/image.install
index a368993..4fb58d8 100644
--- modules/image/image.install
+++ modules/image/image.install
@@ -189,3 +189,40 @@ function image_update_7000() {
   }
 }
 
+/**
+ * Implements hook_requirements() to check the PHP GD Library.
+ *
+ * @param $phase
+ */
+function image_requirements($phase) {
+  $requirements = array();
+
+  if ($phase == 'runtime') {
+    // Check for the PHP GD library.
+    if (function_exists('imagegd2')) {
+      $info = gd_info();
+      $requirements['image_gd'] = array(
+        'value' => $info['GD Version'],
+      );
+
+      // Check for filter and rotate support.
+      if (function_exists('imagefilter') && function_exists('imagerotate')) {
+        $requirements['image_gd']['severity'] = REQUIREMENT_OK;
+      }
+      else {
+        $requirements['image_gd']['severity'] = REQUIREMENT_ERROR;
+        $requirements['image_gd']['description'] = t('The GD Library for PHP is enabled, but was compiled without support for functions used by the rotate and desaturate effects. It was probably compiled using the official GD libraries from http://www.libgd.org instead of the GD library bundled with PHP. You should recompile PHP --with-gd using the bundled GD library. See <a href="http://www.php.net/manual/book.image.php">the PHP manual</a>.');
+      }
+    }
+    else {
+      $requirements['image_gd'] = array(
+        'value' => t('Not installed'),
+        'severity' => REQUIREMENT_ERROR,
+        'description' => t('The GD library for PHP is missing or outdated. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/book.image.php')),
+      );
+    }
+    $requirements['image_gd']['title'] = t('GD library rotate and desaturate effects');
+  }
+
+  return $requirements;
+}