diff --git a/Testing/OpenCLImageTest.cl b/Testing/OpenCLImageTest.cl
index ba38d38cd..f0bf713cd 100644
--- a/Testing/OpenCLImageTest.cl
+++ b/Testing/OpenCLImageTest.cl
@@ -19,7 +19,7 @@
 __constant sampler_t imageSampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP | CLK_FILTER_NEAREST;
 
 /* Copy input 2D image to output 2D image */
-__kernel void Image2DCopy( __read_only image2d_t input, image2d_t output )
+__kernel void Image2DCopy( __read_only image2d_t input, __write_only image2d_t output )
 {
   int2  coord = (int2)( get_global_id( 0 ), get_global_id( 1 ) );
   uint4 temp = read_imageui( input, imageSampler, coord );
@@ -29,7 +29,7 @@ __kernel void Image2DCopy( __read_only image2d_t input, image2d_t output )
 
 
 /* Copy input 3D image to 2D image */
-__kernel void Image3DCopy( __read_only image3d_t input, image2d_t output )
+__kernel void Image3DCopy( __read_only image3d_t input, __write_only image2d_t output )
 {
   int2 coord = (int2)( get_global_id( 0 ), get_global_id( 1 ) );