diff --git a/modules/ocl/doc/image_processing.rst b/modules/ocl/doc/image_processing.rst
index 7dde475cc..100876a15 100644
--- a/modules/ocl/doc/image_processing.rst
+++ b/modules/ocl/doc/image_processing.rst
@@ -65,15 +65,15 @@ ocl::integral
 -----------------
 Computes an integral image.
 
-.. ocv:function:: void ocl::integral(const oclMat &src, oclMat &sum, oclMat &sqsum)
+.. ocv:function:: void ocl::integral(const oclMat &src, oclMat &sum, oclMat &sqsum, int sdepth=-1)
 
-.. ocv:function:: void ocl::integral(const oclMat &src, oclMat &sum)
+.. ocv:function:: void ocl::integral(const oclMat &src, oclMat &sum, int sdepth=-1)
 
     :param src: Source image. Only  ``CV_8UC1`` images are supported for now.
 
-    :param sum: Integral image containing 32-bit unsigned integer values packed into  ``CV_32SC1`` .
+    :param sum: Integral image containing 32-bit unsigned integer or 32-bit floating-point .
 
-    :param sqsum: Sqsum values is ``CV_32FC1`` type.
+    :param sqsum: Sqsum values is ``CV_32FC1`` or ``CV_64FC1`` type.
 
 .. seealso:: :ocv:func:`integral`
 
diff --git a/modules/ocl/src/imgproc.cpp b/modules/ocl/src/imgproc.cpp
index 54df4d726..1e0560563 100644
--- a/modules/ocl/src/imgproc.cpp
+++ b/modules/ocl/src/imgproc.cpp
@@ -792,7 +792,6 @@ namespace cv
                 return;
             }
 
-            int depth = src.depth();
             if( sdepth <= 0 )
                 sdepth = CV_32S;
             sdepth = CV_MAT_DEPTH(sdepth);