4 files changed, 5 insertions, 5 deletions
diff --git a/src/engine/gnump/eng_gmp.h b/src/engine/gnump/eng_gmp.h
index 08d9caa12..a0ff2661c 100644
--- a/src/engine/gnump/eng_gmp.h
+++ b/src/engine/gnump/eng_gmp.h
@@ -13,7 +13,7 @@ namespace Botan {
 /*************************************************
 * GMP Engine                                     *
 *************************************************/
-class GMP_Engine : public Engine
+class BOTAN_DLL GMP_Engine : public Engine
    {
    public:
 #if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY)
diff --git a/src/engine/gnump/gmp_wrap.h b/src/engine/gnump/gmp_wrap.h
index 09a8590c4..e2a420e6b 100644
--- a/src/engine/gnump/gmp_wrap.h
+++ b/src/engine/gnump/gmp_wrap.h
@@ -14,7 +14,7 @@ namespace Botan {
 /*************************************************
 * Lightweight GMP mpz_t Wrapper                  *
 *************************************************/
-class GMP_MPZ
+class BOTAN_DLL GMP_MPZ
    {
    public:
       mpz_t value;
diff --git a/src/engine/openssl/bn_wrap.h b/src/engine/openssl/bn_wrap.h
index a42967544..e8464e74e 100644
--- a/src/engine/openssl/bn_wrap.h
+++ b/src/engine/openssl/bn_wrap.h
@@ -14,7 +14,7 @@ namespace Botan {
 /*************************************************
 * Lightweight OpenSSL BN Wrapper                 *
 *************************************************/
-class OSSL_BN
+class BOTAN_DLL OSSL_BN
    {
    public:
       BIGNUM* value;
@@ -34,7 +34,7 @@ class OSSL_BN
 /*************************************************
 * Lightweight OpenSSL BN_CTX Wrapper             *
 *************************************************/
-class OSSL_BN_CTX
+class BOTAN_DLL OSSL_BN_CTX
    {
    public:
       BN_CTX* value;
diff --git a/src/engine/openssl/eng_ossl.h b/src/engine/openssl/eng_ossl.h
index 5f72357c2..979261214 100644
--- a/src/engine/openssl/eng_ossl.h
+++ b/src/engine/openssl/eng_ossl.h
@@ -14,7 +14,7 @@ namespace Botan {
 /*************************************************
 * OpenSSL Engine                                 *
 *************************************************/
-class OpenSSL_Engine : public Engine
+class BOTAN_DLL OpenSSL_Engine : public Engine
    {
    public:
 #if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY)