diff --git a/src/libeis-socket.c b/src/libeis-socket.c
index 915360d..5009600 100644
--- a/src/libeis-socket.c
+++ b/src/libeis-socket.c
@@ -41,6 +41,28 @@
 #include "libeis.h"
 #include "libeis-private.h"
 
+#if defined(__DragonFly__) || defined(__FreeBSD__)
+#include <sys/ucred.h>
+#define CRED_T   xucred
+#define CRED_LVL SOL_LOCAL
+#define CRED_OPT LOCAL_PEERCRED
+#define CRED_PID cr_pid
+#elif defined(__NetBSD__)
+#define CRED_T   unpcbid
+#define CRED_LVL SOL_LOCAL
+#define CRED_OPT LOCAL_PEEREID
+#define CRED_PID unp_pid
+#else
+#if defined(__OpenBSD__)
+#define CRED_T sockpeercred
+#else
+#define CRED_T ucred
+#endif
+#define CRED_LVL SOL_SOCKET
+#define CRED_OPT SO_PEERCRED
+#define CRED_PID pid
+#endif
+
 struct eis_socket {
 	struct object object;
 	struct source *listener;
@@ -189,11 +211,11 @@ eis_backend_socket_get_client_pid(struct eis_client* client)
 		log_bug_client(eis, "Not a socket backend");
 		return -EINVAL;
 	}
-	struct ucred ucred;
+	struct CRED_T ucred;
 	socklen_t len = sizeof(ucred);
-	int rc = getsockopt(source_get_fd(client->source), SOL_SOCKET, SO_PEERCRED, &ucred, &len);
+	int rc = getsockopt(source_get_fd(client->source), CRED_LVL, CRED_OPT, &ucred, &len);
 	if (rc < 0) {
 		return -errno;
 	}
-	return ucred.pid;
+	return ucred.CRED_PID;
 }