diff --git a/SoObjects/SOGo/NSData+Crypto.m b/SoObjects/SOGo/NSData+Crypto.m
index f2aeb8745..54eb51bbb 100644
--- a/SoObjects/SOGo/NSData+Crypto.m
+++ b/SoObjects/SOGo/NSData+Crypto.m
@@ -27,6 +27,9 @@
 
 #include <fcntl.h>
 #include <unistd.h>
+#if !defined(__OpenBSD__) && !defined(__FreeBSD__)
+#include <crypt.h>
+#endif
 
 #if defined(HAVE_GNUTLS)
 #include <gnutls/gnutls.h>