Index: src/core/window-props.c
--- src/core/window-props.c.orig
+++ src/core/window-props.c
@@ -54,7 +54,7 @@
 #include <sys/types.h>
 #include <pwd.h>
 
-#ifdef HAVE_GTOP
+#if defined(HAVE_GTOP) && !defined(__OpenBSD__)
 #include <glibtop/procuid.h>
 #include <errno.h>
 #include <pwd.h>
@@ -443,7 +443,7 @@ reload_net_wm_user_time_window (MetaWindow    *window,
 static gboolean
 owner_of_process (pid_t process, uid_t *result)
 {
-#ifdef HAVE_GTOP
+#if defined(HAVE_GTOP) && !defined(__OpenBSD__)
   glibtop_proc_uid process_details;
 
   glibtop_get_proc_uid (&process_details, process);
