diff --git a/modules/cudaarithm/test/test_event.cpp b/modules/cudaarithm/test/test_event.cpp
index 375c51d0d..ffe0f7b68 100644
--- a/modules/cudaarithm/test/test_event.cpp
+++ b/modules/cudaarithm/test/test_event.cpp
@@ -91,7 +91,7 @@ CUDA_TEST_P(AsyncEvent, Timing)
             const double elTimeMs = Event::elapsedTime(startEvent, stopEvent);
             ASSERT_GT(elTimeMs, 0);
         }
-        catch (cv::Exception ex) {
+        catch (const cv::Exception& ex) {
             failed = true;
         }
         ASSERT_EQ(failed, shouldFail.at(i));
diff --git a/modules/datasets/src/tinyxml2/tinyxml2.h b/modules/datasets/src/tinyxml2/tinyxml2.h
index 95ae3bcc0..89a16c65b 100644
--- a/modules/datasets/src/tinyxml2/tinyxml2.h
+++ b/modules/datasets/src/tinyxml2/tinyxml2.h
@@ -212,7 +212,7 @@ template <class T, int INIT>
 class DynArray
 {
 public:
-    DynArray< T, INIT >() {
+    DynArray() {
         _mem = _pool;
         _allocated = INIT;
         _size = 0;
diff --git a/modules/xphoto/src/oilpainting.cpp b/modules/xphoto/src/oilpainting.cpp
index 21e62414c..daeffd386 100644
--- a/modules/xphoto/src/oilpainting.cpp
+++ b/modules/xphoto/src/oilpainting.cpp
@@ -58,7 +58,7 @@ private:
     int dynRatio;
 
 public:
-    ParallelOilPainting<Type>(Mat& img, Mat &d, Mat &iLuminance, int r,int k) :
+    ParallelOilPainting(Mat& img, Mat &d, Mat &iLuminance, int r,int k) :
         imgSrc(img),
         dst(d),
         imgLuminance(iLuminance),