diff --git a/gio/gapplication.c b/gio/gapplication.c
index 112829fce..d649e4539 100644
--- a/gio/gapplication.c
+++ b/gio/gapplication.c
@@ -459,7 +459,7 @@ g_application_pack_option_entries (GApplication *application,
           break;
 
         case G_OPTION_ARG_DOUBLE:
-          if (*(gdouble *) entry->arg_data)
+          if (*(gdouble *) entry->arg_data != 0.0)
             value = g_variant_new_double (*(gdouble *) entry->arg_data);
           break;