diff --git a/modules/core/src/channels.cpp b/modules/core/src/channels.cpp
index fd6600686d..efaeb91068 100644
--- a/modules/core/src/channels.cpp
+++ b/modules/core/src/channels.cpp
@@ -46,36 +46,36 @@ mixChannels_( const T** src, const int* sdelta,
 }
 
 
-static void mixChannels8u( const uchar** src, const int* sdelta,
-                           uchar** dst, const int* ddelta,
+static void mixChannels8u( const void** src, const int* sdelta,
+                           void** dst, const int* ddelta,
                            int len, int npairs )
 {
-    mixChannels_(src, sdelta, dst, ddelta, len, npairs);
+    mixChannels_((const uchar**)src, sdelta, (uchar**)dst, ddelta, len, npairs);
 }
 
-static void mixChannels16u( const uchar** src, const int* sdelta,
-                            uchar** dst, const int* ddelta,
+static void mixChannels16u( const void** src, const int* sdelta,
+                            void** dst, const int* ddelta,
                             int len, int npairs )
 {
     mixChannels_((const ushort**)src, sdelta, (ushort**)dst, ddelta, len, npairs);
 }
 
-static void mixChannels32s( const uchar** src, const int* sdelta,
-                            uchar** dst, const int* ddelta,
+static void mixChannels32s( const void** src, const int* sdelta,
+                            void** dst, const int* ddelta,
                             int len, int npairs )
 {
     mixChannels_((const int**)src, sdelta, (int**)dst, ddelta, len, npairs);
 }
 
-static void mixChannels64s( const uchar** src, const int* sdelta,
-                            uchar** dst, const int* ddelta,
+static void mixChannels64s( const void** src, const int* sdelta,
+                            void** dst, const int* ddelta,
                             int len, int npairs )
 {
     mixChannels_((const int64**)src, sdelta, (int64**)dst, ddelta, len, npairs);
 }
 
-typedef void (*MixChannelsFunc)( const uchar** src, const int* sdelta,
-        uchar** dst, const int* ddelta, int len, int npairs );
+typedef void (*MixChannelsFunc)( const void** src, const int* sdelta,
+        void** dst, const int* ddelta, int len, int npairs );
 
 static MixChannelsFunc getMixchFunc(int depth)
 {
@@ -158,7 +158,7 @@ void cv::mixChannels( const Mat* src, size_t nsrcs, Mat* dst, size_t ndsts, cons
         for( int t = 0; t < total; t += blocksize )
         {
             int bsz = std::min(total - t, blocksize);
-            func( srcs, sdelta, dsts, ddelta, bsz, (int)npairs );
+            func( (const void**)srcs, sdelta, (void **)dsts, ddelta, bsz, (int)npairs );
 
             if( t + blocksize < total )
                 for( k = 0; k < npairs; k++ )