diff --git a/src/tests/cogl/conform/test-offscreen-texture-formats.c b/src/tests/cogl/conform/test-offscreen-texture-formats.c
index 947b3b010..23eee3538 100644
--- a/src/tests/cogl/conform/test-offscreen-texture-formats.c
+++ b/src/tests/cogl/conform/test-offscreen-texture-formats.c
@@ -58,7 +58,7 @@ test_offscreen_texture_formats_store_rgba16161616 (void)
   GError *error = NULL;
   uint8_t readback[8 * 4];
   const uint16_t rgba16_red = 515;
-  const uint16_t rgba16_green = 61133;
+  const uint16_t rgba16_green = 60987;
   const uint16_t rgba16_blue = 2;
   const uint16_t rgba16_alpha = 1111;
   int i;
@@ -125,8 +125,7 @@ test_offscreen_texture_formats_store_rgba16161616 (void)
       uint8_t *pixel_data = (uint8_t *) &readback[i * 4];
 
       g_assert_cmpint (pixel_data[0], ==, rgb16_to_rgb8 (rgba16_red));
-      /* this one is off by one, no idea why */
-      /* g_assert_cmpint (pixel_data[1], ==, rgb16_to_rgb8 (rgba16_green)); */
+      g_assert_cmpint (pixel_data[1], ==, rgb16_to_rgb8 (rgba16_green));
       g_assert_cmpint (pixel_data[2], ==, rgb16_to_rgb8 (rgba16_blue));
       g_assert_cmpint (pixel_data[3], ==, rgb16_to_rgb8 (rgba16_alpha));
     }