diff --git a/config.compat b/config.compat
index 4a1db7d8..f835561d 100644
--- a/config.compat
+++ b/config.compat
@@ -570,7 +570,7 @@ NAMESPACE_END
 
 // How to declare class constants
 // Use enum for OS X 10.5 ld, http://github.com/weidai11/cryptopp/issues/255
-#if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__INTEL_COMPILER) || defined(__BORLANDC__)
+#if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__INTEL_COMPILER) || defined(__BORLANDC__) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
 #	define CRYPTOPP_CONSTANT(x) enum {x};
 #else
 #	define CRYPTOPP_CONSTANT(x) static const int x;
diff --git a/config.h b/config.h
index 39ab7e4e..140e2e31 100644
--- a/config.h
+++ b/config.h
@@ -570,7 +570,7 @@ NAMESPACE_END
 
 // How to declare class constants
 // Use enum for OS X 10.5 ld, http://github.com/weidai11/cryptopp/issues/255
-#if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__INTEL_COMPILER) || defined(__BORLANDC__)
+#if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__INTEL_COMPILER) || defined(__BORLANDC__) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
 #	define CRYPTOPP_CONSTANT(x) enum {x};
 #else
 #	define CRYPTOPP_CONSTANT(x) static const int x;