diff --git a/lib/Varien/Image/Adapter/Gd2.php b/lib/Varien/Image/Adapter/Gd2.php
index 92219bcd927..8f99a6c9cab 100644
--- a/lib/Varien/Image/Adapter/Gd2.php
+++ b/lib/Varien/Image/Adapter/Gd2.php
@@ -263,7 +263,7 @@ private function _fillBackgroundColor(&$imageResourceTo)
                     $transparentColor = false;
                     if ($transparentIndex >= 0 && $transparentIndex < imagecolorstotal($this->_imageHandler)) {
                         list($r, $g, $b)  = array_values(imagecolorsforindex($this->_imageHandler, $transparentIndex));
-                        $transparentColor = imagecolorallocate($imageResourceTo, $r, $g, $b);
+                        $transparentColor = imagecolorallocate($imageResourceTo, (int)$r, (int)$g, (int)$b);
                     }
                     if (false === $transparentColor) {
                         throw new Exception('Failed to allocate transparent color for image.');
@@ -279,7 +279,7 @@ private function _fillBackgroundColor(&$imageResourceTo)
             }
         }
         list($r, $g, $b) = $this->_backgroundColor;
-        $color = imagecolorallocate($imageResourceTo, $r, $g, $b);
+        $color = imagecolorallocate($imageResourceTo, (int)$r, (int)$g, (int)$b);
         if (!imagefill($imageResourceTo, 0, 0, $color)) {
             throw new Exception("Failed to fill image background with color {$r} {$g} {$b}. File: {$this->_fileName}");
         }