diff --git a/uppsrc/Core/BlockStream.cpp b/uppsrc/Core/BlockStream.cpp
index 2cbd28510..e8145ac3d 100644
--- a/uppsrc/Core/BlockStream.cpp
+++ b/uppsrc/Core/BlockStream.cpp
@@ -19,8 +19,8 @@ void BlockStream::SetBufferSize(dword size)
 	pagesize = 1 << n;
 	pagemask = (uint64)-1 << n;
 	if(buffer)
-		delete[] buffer;
-	buffer = new byte[pagesize];
+		MemoryFree(buffer);
+	buffer = (byte *)MemoryAlloc(pagesize);
 	pos = 0;
 	ptr = rdlim = wrlim = buffer;
 	pagepos = -1;
@@ -36,7 +36,7 @@ BlockStream::BlockStream()
 BlockStream::~BlockStream()
 {
 	if(buffer)
-		delete[] buffer;
+		MemoryFree(buffer);
 }
 
 int64 BlockStream::GetSize() const {
diff --git a/uppsrc/Core/Stream.cpp b/uppsrc/Core/Stream.cpp
index ab3a7c6f2..5a43d2e4d 100644
--- a/uppsrc/Core/Stream.cpp
+++ b/uppsrc/Core/Stream.cpp
@@ -1147,14 +1147,14 @@ void CompareStream::_Put(int w) {
 OutStream::OutStream()
 {
 	const int bsz = 64 * 1024;
-	h = new byte[bsz];
+	h = (byte *)MemoryAlloc(bsz);
 	buffer = ptr = h;
 	wrlim = h + bsz;
 }
 
 OutStream::~OutStream()
 {	// Note: cannot call Close here !
-	delete[] h;
+	MemoryFree(h);
 }
 
 void OutStream::_Put(int w)
diff --git a/uppsrc/Core/Vcont.hpp b/uppsrc/Core/Vcont.hpp
index 8030ff333..24e4ac370 100644
--- a/uppsrc/Core/Vcont.hpp
+++ b/uppsrc/Core/Vcont.hpp
@@ -672,7 +672,7 @@ String Array<T>::ToString() const
 template <class T>
 void BiVector<T>::ReAlloc(int newalloc) {
 	ASSERT(items <= newalloc && items >= 0);
-	T *newvector = newalloc ? (T *) new byte[newalloc * sizeof(T)] : NULL;
+	T *newvector = newalloc ? (T *) MemoryAlloc(newalloc * sizeof(T)) : NULL;
 	if(items) {
 		int end = start + items;
 		if(end <= alloc)
@@ -681,7 +681,7 @@ void BiVector<T>::ReAlloc(int newalloc) {
 			memcpy((void *)newvector, (void *)(vector + start), (alloc - start) * sizeof(T));
 			memcpy((void *)(newvector + alloc - start), (void *)vector, (end - alloc) * sizeof(T));
 		}
-		delete[] (byte *)vector;
+		MemoryFree(vector);
 	}
 	vector = newvector;
 	alloc = newalloc;
@@ -745,7 +745,7 @@ void BiVector<T>::Free() {
 			Destroy(vector + start, vector + alloc);
 			Destroy(vector, vector + end - alloc);
 		}
-		delete[] (byte *)vector;
+		MemoryFree(vector);
 	}
 }
 
diff --git a/uppsrc/Core/z.cpp b/uppsrc/Core/z.cpp
index dabfb79c3..24db8ecb1 100644
--- a/uppsrc/Core/z.cpp
+++ b/uppsrc/Core/z.cpp
@@ -17,12 +17,12 @@ namespace Upp {
 
 static voidpf zalloc_new(voidpf opaque, uInt items, uInt size)
 {
-	return new byte[items * size];
+	return MemoryAlloc(items * size);
 }
 
 static void zfree_new(voidpf opaque, voidpf address)
 {
-	delete[] (byte *)address;
+	MemoryFree(address);
 }
 
 enum
diff --git a/uppsrc/Painter/BufferPainter.h b/uppsrc/Painter/BufferPainter.h
index 613793ac9..04668b938 100644
--- a/uppsrc/Painter/BufferPainter.h
+++ b/uppsrc/Painter/BufferPainter.h
@@ -7,13 +7,13 @@ class ClippingLine : NoCopy {
 	byte *data;
 	
 public:
-	void Clear()                     { if(!IsFull()) delete[] data; data = NULL; }
-	void Set(const byte *s, int len) { data = new byte[len]; memcpy(data, s, len); }
-	void SetFull()                   { ASSERT(!data); data = (byte *)1; }
+	void Clear()                         { if(!IsFull()) MemoryFree(data); data = NULL; }
+	void Set(const byte *s, int len)     { data = (byte *)MemoryAlloc(len); memcpy(data, s, len); }
+	void SetFull()                       { ASSERT(!data); data = (byte *)1; }
 
-	bool IsEmpty() const             { return !data; }
-	bool IsFull() const              { return data == (byte *)1; }
-	operator const byte*() const     { return data; }
+	bool IsEmpty() const                 { return !data; }
+	bool IsFull() const                  { return data == (byte *)1; }
+	operator const byte*() const         { return data; }
 	
 	ClippingLine()                       { data = NULL; }
 	~ClippingLine()                      { Clear(); }