diff --git a/modules/core/include/opencv2/core/core.hpp b/modules/core/include/opencv2/core/core.hpp
index 09d277a48..57cfcaedf 100644
--- a/modules/core/include/opencv2/core/core.hpp
+++ b/modules/core/include/opencv2/core/core.hpp
@@ -4040,7 +4040,7 @@ public:
     int index;
 };
 
-    
+#if 0    
 class CV_EXPORTS AlgorithmImpl;
 
 /*!
@@ -4086,6 +4086,7 @@ protected:
     
     Ptr<AlgorithmImpl> impl;
 };
+#endif
     
 }
 
diff --git a/modules/core/include/opencv2/core/operations.hpp b/modules/core/include/opencv2/core/operations.hpp
index 5249fd8cd..10c94f3b0 100644
--- a/modules/core/include/opencv2/core/operations.hpp
+++ b/modules/core/include/opencv2/core/operations.hpp
@@ -3550,7 +3550,7 @@ template<typename _Tp> static inline std::ostream& operator << (std::ostream& ou
     return out;
 }
     
-
+#if 0
 template<typename _Tp> struct AlgorithmParamType {};
 template<> struct AlgorithmParamType<int> { enum { type = CV_PARAM_TYPE_INT }; };
 template<> struct AlgorithmParamType<double> { enum { type = CV_PARAM_TYPE_REAL }; };
@@ -3594,6 +3594,7 @@ template<typename _Tp> void Algorithm::setParamRange(int propId, const _Tp& minV
 {
     setParamRange_(propId, AlgorithmParamType<_Tp>::type, &minVal, &maxVal);
 }
+#endif
     
 }