diff --git a/include/qpdf/DLL.h b/include/qpdf/DLL.h
index 8463248..ca9d57a 100644
--- a/include/qpdf/DLL.h
+++ b/include/qpdf/DLL.h
@@ -31,12 +31,14 @@
 
 #if (defined _WIN32 || defined __CYGWIN__) && defined(DLL_EXPORT)
 # define QPDF_DLL __declspec(dllexport)
-# define QPDF_DLL_CLASS
-#elif __GNUC__ >= 4
+#elif defined __GNUC__
 # define QPDF_DLL __attribute__ ((visibility ("default")))
-# define QPDF_DLL_CLASS __attribute__ ((visibility ("default")))
 #else
 # define QPDF_DLL
+#endif
+#ifdef __GNUC__
+# define QPDF_DLL_CLASS QPDF_DLL
+#else
 # define QPDF_DLL_CLASS
 #endif