diff --git a/PrmPkg/Include/Prm.h b/PrmPkg/Include/Prm.h
index e290e53510..007f73416a 100644
--- a/PrmPkg/Include/Prm.h
+++ b/PrmPkg/Include/Prm.h
@@ -3,6 +3,7 @@
   Common Platform Runtime Mechanism (PRM) definitions.
 
   Copyright (c) Microsoft Corporation
+  Copyright (c) 2022, Arm Limited. All rights reserved.<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -15,6 +16,8 @@
 
 #if defined (_MSC_VER)
 #define PRM_EXPORT_API  __declspec(dllexport)
+#elif defined (__GNUC__)
+#define PRM_EXPORT_API  __attribute__ ((visibility ("default")))
 #else
 #define PRM_EXPORT_API
 #endif