diff --git a/thunar/thunar-launcher.c b/thunar/thunar-launcher.c
index f479cf9..0da6a6a 100644
--- a/thunar/thunar-launcher.c
+++ b/thunar/thunar-launcher.c
@@ -546,6 +546,17 @@ thunar_launcher_execute_files (ThunarLauncher *launcher,
 
 
 
+static guint
+thunar_launcher_g_app_info_hash (const void *app_info)
+{
+  /* always return the same value to force g_app_info_equal() to be called */
+  /* this is the absolute worst hash function, but necessary for correctness */
+  /* see https://bugzilla.xfce.org/show_bug.cgi?id=7456 */
+  return 0;
+}
+
+
+
 static void
 thunar_launcher_open_files (ThunarLauncher *launcher,
                             GList          *files)
@@ -556,7 +567,7 @@ thunar_launcher_open_files (ThunarLauncher *launcher,
   GList      *lp;
 
   /* allocate a hash table to associate applications to URIs */
-  applications = g_hash_table_new_full (g_direct_hash,
+  applications = g_hash_table_new_full (thunar_launcher_g_app_info_hash,
                                         (GEqualFunc) g_app_info_equal,
                                         (GDestroyNotify) g_object_unref,
                                         (GDestroyNotify) thunar_g_file_list_free);