diff --git a/modules/features2d/src/opencl/orb.cl b/modules/features2d/src/opencl/orb.cl
index ba5ec6f60..f058daf92 100644
--- a/modules/features2d/src/opencl/orb.cl
+++ b/modules/features2d/src/opencl/orb.cl
@@ -207,7 +207,7 @@ ORB_computeDescriptor(__global const uchar* imgbuf, int imgstep, int imgoffset0,
             pattern += 12*2;
 
         #elif WTA_K == 4
-            int t0, t1, t2, t3, k, val;
+            int t0, t1, t2, t3, k;
             int a, b;
 
             t0 = GET_VALUE(0); t1 = GET_VALUE(1);