diff --git a/include/libssh2.h b/include/libssh2.h
index cbf86e33..187539c6 100644
--- a/include/libssh2.h
+++ b/include/libssh2.h
@@ -154,18 +154,6 @@ typedef int libssh2_socket_t;
 #define LIBSSH2_INVALID_SOCKET -1
 #endif /* WIN32 */
 
-#ifndef SIZE_MAX
-#if _WIN64
-#define SIZE_MAX 0xFFFFFFFFFFFFFFFF
-#else
-#define SIZE_MAX 0xFFFFFFFF
-#endif
-#endif
-
-#ifndef UINT_MAX
-#define UINT_MAX 0xFFFFFFFF
-#endif
-
 /*
  * Determine whether there is small or large file support on windows.
  */
diff --git a/src/libssh2_priv.h b/src/libssh2_priv.h
index 387b8a77..98d01f2a 100644
--- a/src/libssh2_priv.h
+++ b/src/libssh2_priv.h
@@ -146,6 +146,18 @@ static inline int writev(int sock, struct iovec *iov, int nvecs)
 
 #endif
 
+#ifndef SIZE_MAX
+#if _WIN64
+#define SIZE_MAX 0xFFFFFFFFFFFFFFFF
+#else
+#define SIZE_MAX 0xFFFFFFFF
+#endif
+#endif
+
+#ifndef UINT_MAX
+#define UINT_MAX 0xFFFFFFFF
+#endif
+
 /* RFC4253 section 6.1 Maximum Packet Length says:
  *
  * "All implementations MUST be able to process packets with