diff --git a/modules/hal/include/opencv2/hal.hpp b/modules/hal/include/opencv2/hal.hpp
index d1ec73b429..125bbc8248 100644
--- a/modules/hal/include/opencv2/hal.hpp
+++ b/modules/hal/include/opencv2/hal.hpp
@@ -247,15 +247,7 @@ template<typename T> struct OpAbsDiff
     typedef T type1;
     typedef T type2;
     typedef T rtype;
-    T operator()(T a, T b) const { return (T)std::abs(a - b); }
-};
-
-template<typename T, typename WT=T> struct OpAbsDiffS
-{
-    typedef T type1;
-    typedef WT type2;
-    typedef T rtype;
-    T operator()(T a, WT b) const { return saturate_cast<T>(std::abs(a - b)); }
+    T operator()(T a, T b) const { return a > b ? a - b : b - a; }
 };
 
 template<typename T> struct OpAnd
diff --git a/modules/hal/samples/simple_hal/CMakeLists.txt b/modules/hal/samples/simple_hal/CMakeLists.txt
index ee4ac22be9..dd0be70f2f 100644
--- a/modules/hal/samples/simple_hal/CMakeLists.txt
+++ b/modules/hal/samples/simple_hal/CMakeLists.txt
@@ -9,4 +9,3 @@ endif()
 add_library(simple_hal simple.cpp)
 set(OPENCV_HAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
 target_include_directories(simple_hal PUBLIC ${CMAKE_CURRENT_SOURCE_DIR} ${OPENCV_HAL_DIR}/include)
-
diff --git a/modules/hal/samples/simple_hal/simple.cpp b/modules/hal/samples/simple_hal/simple.cpp
index 49d77b02ac..564a611a5a 100644
--- a/modules/hal/samples/simple_hal/simple.cpp
+++ b/modules/hal/samples/simple_hal/simple.cpp
@@ -31,4 +31,3 @@ int slow_not8u(const uchar* src1, size_t step1, const uchar* src2, size_t step2,
             dst[x] = ~src1[x];
     return cv::hal::Error::Ok;
 }
-