diff --git a/src/gd.h b/src/gd.h
index 3056039..8a7608a 100644
--- a/src/gd.h
+++ b/src/gd.h
@@ -62,6 +62,10 @@ extern "C" {
 #  else
 #   define BGD_EXPORT_DATA_PROT __declspec(dllimport)
 #  endif
+#  ifdef NONDLL
+#   undef BGD_EXPORT_DATA_PROT
+#   define BGD_EXPORT_DATA_PROT
+#  endif
 # endif
 # define BGD_STDCALL __stdcall
 # define BGD_EXPORT_DATA_IMPL