diff --git a/gtk/spice-util.c b/gtk/spice-util.c
index fdea362..62c6549 100644
--- a/gtk/spice-util.c
+++ b/gtk/spice-util.c
@@ -49,12 +49,12 @@ void spice_util_set_debug(gboolean enabled)
 {
 #if GLIB_CHECK_VERSION(2, 31, 0)
     if (enabled) {
-        gchar *doms = getenv("G_MESSAGES_DEBUG");
+        gchar *doms = g_getenv("G_MESSAGES_DEBUG");
         if (!doms) {
-            setenv("G_MESSAGES_DEBUG", G_LOG_DOMAIN, 1);
+            g_setenv("G_MESSAGES_DEBUG", G_LOG_DOMAIN, 1);
         } else if (!strstr(doms, G_LOG_DOMAIN)) {
             gchar *newdoms = g_strdup_printf("%s %s", doms, G_LOG_DOMAIN);
-            setenv("G_MESSAGES_DEBUG", newdoms, 1);
+            g_setenv("G_MESSAGES_DEBUG", newdoms, 1);
             g_free(newdoms);
         }
     }