diff --git a/platform/qt/platform.gyp b/platform/qt/platform.gyp
index 2a0e1c57b..7968dbc3a 100644
--- a/platform/qt/platform.gyp
+++ b/platform/qt/platform.gyp
@@ -126,6 +126,12 @@
               '<@(webp_static_libs)',
             ],
           },
+        }, {
+          'variables': {
+            'cflags': [
+              '-DQT_IMAGE_DECODERS',
+            ],
+          },
         }],
         ['<(qt_version_major) == 4', {
           'variables': {