diff --git a/exec/coroipcs.c b/exec/coroipcs.c
index ca00b860..ef165d69 100644
--- a/exec/coroipcs.c
+++ b/exec/coroipcs.c
@@ -531,7 +531,7 @@ extern void coroipcs_ipc_init (
 #if defined(COROSYNC_LINUX)
 	sprintf (un_addr.sun_path + 1, "%s", api->socket_name);
 #else
-	sprintf (un_addr.sun_path, "%s%s", SOCKETDIR, api->socket_name);
+	sprintf (un_addr.sun_path, "%s/%s", SOCKETDIR, api->socket_name);
 	unlink (un_addr.sun_path);
 #endif
 
diff --git a/lib/coroipcc.c b/lib/coroipcc.c
index 3896bf55..f0b6dcb1 100644
--- a/lib/coroipcc.c
+++ b/lib/coroipcc.c
@@ -304,7 +304,7 @@ coroipcc_service_connect (
 #if defined(COROSYNC_LINUX)
 	sprintf (address.sun_path + 1, "%s", socket_name);
 #else
-	sprintf (address.sun_path, "%s%s", SOCKETDIR, socket_name);
+	sprintf (address.sun_path, "%s/%s", SOCKETDIR, socket_name);
 #endif
 	res = connect (request_fd, (struct sockaddr *)&address,
 		AIS_SUN_LEN(&address));