diff --git a/src/util/glibcompat.c b/src/util/glibcompat.c
index 4ebefb4478ae7c376b74ed4214ee9c80567ec1d9..9fba54cb79717661d9b968858821729325e2e0e1 100644
--- a/src/util/glibcompat.c
+++ b/src/util/glibcompat.c
@@ -55,6 +55,7 @@ vir_g_strdup_vprintf(const char *msg, va_list args)
 }
 
 
+/* Drop when min glib >= 2.63.0 */
 gint
 vir_g_fsync(gint fd)
 {
diff --git a/src/util/glibcompat.h b/src/util/glibcompat.h
index d6b83f4b93093c15c8faeeaf89bec6a333aad86d..7878ad24ed16b237581e10dbf0431f28bbb0cacd 100644
--- a/src/util/glibcompat.h
+++ b/src/util/glibcompat.h
@@ -32,6 +32,5 @@ gint vir_g_fsync(gint fd);
 # define g_strdup_vprintf vir_g_strdup_vprintf
 #endif
 
-#if !GLIB_CHECK_VERSION(2, 63, 0)
-# define g_fsync vir_g_fsync
-#endif
+#undef g_fsync
+#define g_fsync vir_g_fsync