diff --git a/libgimpbase/gimputils.c b/libgimpbase/gimputils.c
index 8758a7ab0a..08d91e0afa 100644
--- a/libgimpbase/gimputils.c
+++ b/libgimpbase/gimputils.c
@@ -1324,7 +1324,12 @@ gimp_stack_trace_print (const gchar   *prog_name,
           eintr_count = 0;
           if (! stack_printed)
             {
-#if defined(G_OS_WIN32) || defined(SYS_gettid) || defined(HAVE_THR_SELF)
+#if defined(PLATFORM_OSX)
+              if (stream)
+                g_fprintf (stream,
+                           "\n# Stack traces obtained from PID %d - Thread 0x%lx #\n\n",
+                           pid, tid);
+#elif defined(G_OS_WIN32) || defined(SYS_gettid) || defined(HAVE_THR_SELF)
               if (stream)
                 g_fprintf (stream,
                            "\n# Stack traces obtained from PID %d - Thread %lu #\n\n",
@@ -1333,7 +1338,11 @@ gimp_stack_trace_print (const gchar   *prog_name,
               if (trace)
                 {
                   gtrace = g_string_new (NULL);
-#if defined(G_OS_WIN32) || defined(SYS_gettid) || defined(HAVE_THR_SELF)
+#if defined(PLATFORM_OSX)
+                  g_string_printf (gtrace,
+                                   "\n# Stack traces obtained from PID %d - Thread 0x%lx #\n\n",
+                                   pid, tid);
+#elif defined(G_OS_WIN32) || defined(SYS_gettid) || defined(HAVE_THR_SELF)
                   g_string_printf (gtrace,
                                    "\n# Stack traces obtained from PID %d - Thread %lu #\n\n",
                                    pid, tid);