diff -Naur virtuoso-opensource-6.1.0/libsrc/Dk/Dkernel.c virtuoso-opensource-6.1.0-1/libsrc/Dk/Dkernel.c
--- virtuoso-opensource-6.1.0/libsrc/Dk/Dkernel.c	2010-01-28 01:42:34.000000000 +0100
+++ virtuoso-opensource-6.1.0-1/libsrc/Dk/Dkernel.c	2010-02-10 23:40:24.000000000 +0100
@@ -66,6 +66,10 @@
 #include <openssl/pkcs12.h>
 #include <openssl/rand.h>
 
+#if OPENSSL_VERSION_NUMBER >= 0x10000000L
+#define STACK _STACK
+#endif
+
 static void ssl_server_init ();
 
 #ifndef NO_THREAD
diff -Naur virtuoso-opensource-6.1.0/libsrc/Wi/http.c virtuoso-opensource-6.1.0-1/libsrc/Wi/http.c
--- virtuoso-opensource-6.1.0/libsrc/Wi/http.c	2010-02-01 11:44:04.000000000 +0100
+++ virtuoso-opensource-6.1.0-1/libsrc/Wi/http.c	2010-02-10 23:40:51.000000000 +0100
@@ -79,6 +79,10 @@
 #define closesocket close
 #endif
 
+#if OPENSSL_VERSION_NUMBER >= 0x10000000L
+#define STACK _STACK
+#endif
+
 resource_t *ws_dbcs;
 basket_t ws_queue;
 dk_mutex_t * ws_queue_mtx;