diff --git a/modules/imgproc/perf/opencl/perf_imgproc.cpp b/modules/imgproc/perf/opencl/perf_imgproc.cpp
index 1b8ebc23f5..d5de677d02 100644
--- a/modules/imgproc/perf/opencl/perf_imgproc.cpp
+++ b/modules/imgproc/perf/opencl/perf_imgproc.cpp
@@ -146,7 +146,7 @@ OCL_PERF_TEST_P(IntegralFixture, Integral1, ::testing::Combine(OCL_TEST_SIZES, O
     const Size srcSize = get<0>(params);
     const int ddepth = get<1>(params);
 
-    UMat src(srcSize, CV_8UC1), dst(srcSize, ddepth);
+    UMat src(srcSize, CV_8UC1), dst(srcSize + Size(1, 1), ddepth);
     declare.in(src, WARMUP_RNG).out(dst);
 
     OCL_TEST_CYCLE() cv::integral(src, dst, ddepth);
@@ -196,6 +196,22 @@ OCL_PERF_TEST_P(CLAHEFixture, CLAHE, OCL_TEST_SIZES)
     SANITY_CHECK(dst);
 }
 
+///////////// SqrBoxFilter ////////////////////////
+
+typedef TestBaseWithParam<Size> SqrBoxFilterFixture;
+
+OCL_PERF_TEST_P(SqrBoxFilterFixture, SqrBoxFilter, OCL_TEST_SIZES)
+{
+    const Size srcSize = GetParam();
+
+    UMat src(srcSize, CV_8UC1), dst(srcSize, CV_32SC1);
+    declare.in(src, WARMUP_RNG).out(dst);
+
+    OCL_TEST_CYCLE() cv::sqrBoxFilter(src, dst, CV_32S, Size(3, 3));
+
+    SANITY_CHECK(dst);
+}
+
 } } // namespace cvtest::ocl
 
 #endif // HAVE_OPENCL