diff --git a/cmake/templates/opencv_run_all_tests_unix.sh.in b/cmake/templates/opencv_run_all_tests_unix.sh.in
index f92d7c6135..2375d1ffb1 100644
--- a/cmake/templates/opencv_run_all_tests_unix.sh.in
+++ b/cmake/templates/opencv_run_all_tests_unix.sh.in
@@ -18,7 +18,7 @@ EOF
 # Parse options
 
 COLOR_OUTPUT=0
-while getopts “hc” OPTION
+while getopts "hc" OPTION
 do
     case $OPTION in
         h)
diff --git a/doc/py_tutorials/py_feature2d/py_fast/py_fast.markdown b/doc/py_tutorials/py_feature2d/py_fast/py_fast.markdown
index 1d7b3e3911..29e385c64d 100644
--- a/doc/py_tutorials/py_feature2d/py_fast/py_fast.markdown
+++ b/doc/py_tutorials/py_feature2d/py_fast/py_fast.markdown
@@ -133,7 +133,7 @@ nonmaxSuppression:
 Additional Resources
 --------------------
 
--#  Edward Rosten and Tom Drummond, “Machine learning for high speed corner detection” in 9th
+-#  Edward Rosten and Tom Drummond, "Machine learning for high speed corner detection" in 9th
     European Conference on Computer Vision, vol. 1, 2006, pp. 430–443.
 2.  Edward Rosten, Reid Porter, and Tom Drummond, "Faster and better: a machine learning approach to
     corner detection" in IEEE Trans. Pattern Analysis and Machine Intelligence, 2010, vol 32, pp.
diff --git a/modules/calib3d/src/usac/quality.cpp b/modules/calib3d/src/usac/quality.cpp
index 835306c4f4..d07c1da29d 100644
--- a/modules/calib3d/src/usac/quality.cpp
+++ b/modules/calib3d/src/usac/quality.cpp
@@ -410,9 +410,9 @@ public:
      * 1.  Check whether j-th data point is consistent with the
      * model
      * 2.  Compute the likelihood ratio λj eq. (1)
-     * 3.  If λj >  A, decide the model is ’bad’ (model ”re-jected”),
+     * 3.  If λj >  A, decide the model is ’bad’ (model "re-jected"),
      * else increment j or continue testing
-     * 4.  If j = N the number of correspondences decide model ”accepted”
+     * 4.  If j = N the number of correspondences decide model "accepted"
      *
      * Verifies model and returns model score.
 
diff --git a/modules/objdetect/include/opencv2/objdetect/aruco_board.hpp b/modules/objdetect/include/opencv2/objdetect/aruco_board.hpp
index fbd420c90e..1f41474405 100644
--- a/modules/objdetect/include/opencv2/objdetect/aruco_board.hpp
+++ b/modules/objdetect/include/opencv2/objdetect/aruco_board.hpp
@@ -90,7 +90,7 @@ public:
      */
     CV_WRAP void generateImage(Size outSize, OutputArray img, int marginSize = 0, int borderBits = 1) const;
 
-    CV_DEPRECATED_EXTERNAL  // avoid using in C++ code, will be moved to “protected” (need to fix bindings first)
+    CV_DEPRECATED_EXTERNAL  // avoid using in C++ code, will be moved to "protected" (need to fix bindings first)
     Board();
 
     struct Impl;
@@ -122,7 +122,7 @@ public:
     CV_WRAP float getMarkerLength() const;
     CV_WRAP float getMarkerSeparation() const;
 
-    CV_DEPRECATED_EXTERNAL  // avoid using in C++ code, will be moved to “protected” (need to fix bindings first)
+    CV_DEPRECATED_EXTERNAL  // avoid using in C++ code, will be moved to "protected" (need to fix bindings first)
     GridBoard();
 };
 
@@ -187,7 +187,7 @@ public:
      */
     CV_WRAP bool checkCharucoCornersCollinear(InputArray charucoIds) const;
 
-    CV_DEPRECATED_EXTERNAL  // avoid using in C++ code, will be moved to “protected” (need to fix bindings first)
+    CV_DEPRECATED_EXTERNAL  // avoid using in C++ code, will be moved to "protected" (need to fix bindings first)
     CharucoBoard();
 };
 
diff --git a/platforms/scripts/pylintrc b/platforms/scripts/pylintrc
index 35c4a34a96..6ef03f8265 100644
--- a/platforms/scripts/pylintrc
+++ b/platforms/scripts/pylintrc
@@ -6,7 +6,7 @@ disable=all
 # Tests
 enable=bad-indentation,       # Used when an unexpected number of indentation’s tabulations or spaces has been found.
        mixed-indentation,     # Used when there are some mixed tabs and spaces in a module.
-       unnecessary-semicolon, # Used when a statement is ended by a semi-colon (”;”), which isn’t necessary.
+       unnecessary-semicolon, # Used when a statement is ended by a semi-colon (";"), which isn’t necessary.
        unused-variable        # Used when a variable is defined but not used. (Use _var to ignore var).