diff --git a/glib/poppler-enums.c.template b/glib/poppler-enums.c.template
index 26a51b4..27be2b9 100644
--- a/glib/poppler-enums.c.template
+++ b/glib/poppler-enums.c.template
@@ -15,7 +15,7 @@
 GType
 @enum_name@_get_type (void)
 {
-  static volatile gsize g_define_type_id__volatile = 0;
+  static gsize g_define_type_id__volatile = 0;
  
   if (g_once_init_enter (&g_define_type_id__volatile)) {
     static const G@Type@Value values[] = {

diff --git a/glib/poppler-private.h b/glib/poppler-private.h
index 7726ec7..436bca5 100644
--- a/glib/poppler-private.h
+++ b/glib/poppler-private.h
@@ -167,7 +167,7 @@ gboolean _poppler_convert_pdf_date_to_gtime (const GooString *date,
 #define POPPLER_DEFINE_BOXED_TYPE(TypeName, type_name, copy_func, free_func)                                                                                                                                                                   \
     GType type_name##_get_type(void)                                                                                                                                                                                                           \
     {                                                                                                                                                                                                                                          \
-        static volatile gsize g_define_type_id__volatile = 0;                                                                                                                                                                                  \
+        static gsize g_define_type_id__volatile = 0;                                                                                                                                                                                           \
         if (g_once_init_enter(&g_define_type_id__volatile)) {                                                                                                                                                                                  \
             GType g_define_type_id = g_boxed_type_register_static(g_intern_static_string(#TypeName), (GBoxedCopyFunc)copy_func, (GBoxedFreeFunc)free_func);                                                                                    \
             g_once_init_leave(&g_define_type_id__volatile, g_define_type_id);                                                                                                                                                                  \