diff --git a/modules/ocl/src/imgproc.cpp b/modules/ocl/src/imgproc.cpp
index e3b3d25227..5ffb9dcf8e 100644
--- a/modules/ocl/src/imgproc.cpp
+++ b/modules/ocl/src/imgproc.cpp
@@ -1661,7 +1661,7 @@ Size cv::ocl::ConvolveBuf::estimateBlockSize(Size result_size, Size /*templ_size
     int width = (result_size.width + 2) / 3;
     int height = (result_size.height + 2) / 3;
     width = std::min(width, result_size.width);
-    height = std::min(height, result_size.height);    
+    height = std::min(height, result_size.height);
     return Size(width, height);
 }
 
@@ -1714,7 +1714,7 @@ static void convolve_run_fft(const oclMat &image, const oclMat &templ, oclMat &r
 
             Size result_roi_size(std::min(x + block_size.width, result.cols) - x,
                                  std::min(y + block_size.height, result.rows) - y);
-            
+
             Rect roi1(x, y, result_roi_size.width, result_roi_size.height);
             Rect roi2(0, 0, result_roi_size.width, result_roi_size.height);
 
@@ -1727,6 +1727,9 @@ static void convolve_run_fft(const oclMat &image, const oclMat &templ, oclMat &r
 
 #else
     CV_Error(CV_StsNotImplemented, "OpenCL DFT is not implemented");
+#define UNUSED(x) (void)(x);
+    UNUSED(image) UNUSED(templ) UNUSED(result) UNUSED(ccorr) UNUSED(buf)
+#undef UNUSED
 #endif
 }
 static void convolve_run(const oclMat &src, const oclMat &temp1, oclMat &dst, String kernelName, const char **kernelString)
diff --git a/modules/ocl/src/match_template.cpp b/modules/ocl/src/match_template.cpp
index 9dee1f4ea7..77f7b1d637 100644
--- a/modules/ocl/src/match_template.cpp
+++ b/modules/ocl/src/match_template.cpp
@@ -112,6 +112,9 @@ namespace cv
             else
                 return false;
 #else
+#define UNUSED(x) (void)(x);
+            UNUSED(method) UNUSED(depth) UNUSED(size)
+#undef  UNUSED
             return true;
 #endif
         }
diff --git a/modules/ocl/src/opencl/imgproc_mulAndScaleSpectrums.cl b/modules/ocl/src/opencl/imgproc_mulAndScaleSpectrums.cl
index 7d3774d070..86d4e5d520 100644
--- a/modules/ocl/src/opencl/imgproc_mulAndScaleSpectrums.cl
+++ b/modules/ocl/src/opencl/imgproc_mulAndScaleSpectrums.cl
@@ -54,16 +54,16 @@ inline cfloat conjf(cfloat a)
     return (cfloat)( a.x, - a.y );
 }
 
-__kernel void 
-    mulAndScaleSpectrumsKernel(
-    __global const cfloat* a, 
-    __global const cfloat* b, 
-    float scale, 
-    __global cfloat* dst, 
-    uint cols, 
-    uint rows, 
+__kernel void
+mulAndScaleSpectrumsKernel(
+    __global const cfloat* a,
+    __global const cfloat* b,
+    float scale,
+    __global cfloat* dst,
+    uint cols,
+    uint rows,
     uint mstep
-    )
+)
 {
     const uint x = get_global_id(0);
     const uint y = get_global_id(1);
@@ -74,16 +74,16 @@ __kernel void
         dst[idx] = (cfloat)( v.x * scale, v.y * scale );
     }
 }
-__kernel void 
-    mulAndScaleSpectrumsKernel_CONJ(
-    __global const cfloat* a, 
-    __global const cfloat* b, 
-    float scale, 
-    __global cfloat* dst, 
-    uint cols, 
-    uint rows, 
+__kernel void
+mulAndScaleSpectrumsKernel_CONJ(
+    __global const cfloat* a,
+    __global const cfloat* b,
+    float scale,
+    __global cfloat* dst,
+    uint cols,
+    uint rows,
     uint mstep
-    )
+)
 {
     const uint x = get_global_id(0);
     const uint y = get_global_id(1);
diff --git a/modules/ocl/test/test_fft.cpp b/modules/ocl/test/test_fft.cpp
index d19a471328..030ea1ff1a 100644
--- a/modules/ocl/test/test_fft.cpp
+++ b/modules/ocl/test/test_fft.cpp
@@ -226,7 +226,7 @@ TEST_P(Convolve_DFT, Accuracy)
 
     cv::ocl::oclMat dst;
     cv::ocl::convolve(cv::ocl::oclMat(src), cv::ocl::oclMat(kernel), dst, ccorr);
-    
+
     cv::Mat dst_gold;
     convolveDFT(src, kernel, dst_gold, ccorr);