diff --git a/include/fmt/core.h b/include/fmt/core.h
index 0d51998f..2008e64e 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -206,6 +206,7 @@
 
 #if !defined(FMT_HEADER_ONLY) && defined(_WIN32)
 #  define FMT_CLASS_API FMT_MSC_WARNING(suppress : 4275)
+#  define FMT_INSTANTIATION_DEF_API
 #  ifdef FMT_EXPORT
 #    define FMT_API __declspec(dllexport)
 #    define FMT_EXTERN_TEMPLATE_API FMT_API
@@ -224,7 +225,7 @@
 #  define FMT_EXTERN_TEMPLATE_API
 #endif
 #ifndef FMT_INSTANTIATION_DEF_API
-#  define FMT_INSTANTIATION_DEF_API
+#  define FMT_INSTANTIATION_DEF_API FMT_API
 #endif
 
 #ifndef FMT_HEADER_ONLY