diff --git a/uppsrc/Core/Stream.h b/uppsrc/Core/Stream.h
index 4ba821ba3..7de44670c 100644
--- a/uppsrc/Core/Stream.h
+++ b/uppsrc/Core/Stream.h
@@ -91,7 +91,7 @@ public:
 	byte       *PutPtr(int size = 1) { ASSERT(size > 0); if(ptr + size <= wrlim) { byte *p = ptr; ptr += size; return p; }; return NULL; }
 	const byte *GetSzPtr(int& size)  { Term(); size = int(rdlim - ptr); byte *p = ptr; ptr += size; return p; }
 
-	void      Put(const void *data, int size)  { ASSERT(size >= 0); if(size) if(ptr + size <= wrlim) { memcpy(ptr, data, size); ptr += size; } else _Put(data, size); }
+	void      Put(const void *data, int size)  { ASSERT(size >= 0); if(size) { if(ptr + size <= wrlim) { memcpy(ptr, data, size); ptr += size; } else _Put(data, size); } }
 	int       Get(void *data, int size)        { ASSERT(size >= 0); if(ptr + size <= rdlim) { memcpy(data, ptr, size); ptr += size; return size; } return _Get(data, size); }
 
 	void      Put(const String& s)   { Put((const char *) s, s.GetLength()); }