diff --git a/wiretap/erf.c b/wiretap/erf.c
index 267932e599..4ae82a0e3c 100644
--- a/wiretap/erf.c
+++ b/wiretap/erf.c
@@ -971,11 +971,11 @@ static gboolean erf_write_phdr(wtap_dumper *wdh, int encap, const union wtap_pse
 
 
 static void erf_dump_priv_init_gen_time(erf_dump_t *dump_priv) {
-  GTimeVal real_time;
+  gint64 real_time;
 
-  g_get_current_time(&real_time);
+  real_time = g_get_real_time();
   /* Convert TimeVal to ERF timestamp */
-  dump_priv->gen_time = ((guint64) real_time.tv_sec << 32) + ((guint64) real_time.tv_usec << 32) / 1000 / 1000;
+  dump_priv->gen_time = ((real_time / G_USEC_PER_SEC) << 32) + ((real_time % G_USEC_PER_SEC) << 32) / 1000 / 1000;
 }