diff --git a/licence.c b/licence.c
index c2a6671..c47df65 100644
--- a/licence.c
+++ b/licence.c
@@ -19,7 +19,12 @@
 */
 
 #include "rdesktop.h"
+
+#ifdef WITH_OPENSSL
+#include <openssl/rc4.h>
+#else
 #include "crypto/rc4.h"
+#endif
 
 extern char username[16];
 extern char hostname[16];