diff --git a/app/actions/filters-actions.c b/app/actions/filters-actions.c
index 4b65c41294..bcbdbba7d8 100644
--- a/app/actions/filters-actions.c
+++ b/app/actions/filters-actions.c
@@ -777,7 +777,7 @@ filters_actions_setup (GimpActionGroup *group)
                                 G_N_ELEMENTS (filters_interactive_actions));
 
   gegl_actions = g_strv_builder_new ();
-  op_classes   = gimp_gegl_get_op_classes ();
+  op_classes   = gimp_gegl_get_op_classes (TRUE);
 
   for (iter = op_classes; iter; iter = iter->next)
     {
diff --git a/app/gegl/gimp-gegl-utils.c b/app/gegl/gimp-gegl-utils.c
index 49d35bc307..10c398b99d 100644
--- a/app/gegl/gimp-gegl-utils.c
+++ b/app/gegl/gimp-gegl-utils.c
@@ -42,9 +42,11 @@
 /*  local function prototypes  */
 
 static gboolean   gimp_gegl_op_blacklisted    (const gchar        *name,
-                                               const gchar        *categories);
+                                               const gchar        *categories,
+                                               gboolean            block_gimp_ops);
 static GList    * gimp_gegl_get_op_subclasses (GType               type,
-                                               GList              *classes);
+                                               GList              *classes,
+                                               gboolean            block_gimp_ops);
 static gint       gimp_gegl_compare_op_names  (GeglOperationClass *a,
                                                GeglOperationClass *b);
 
@@ -52,11 +54,11 @@ static gint       gimp_gegl_compare_op_names  (GeglOperationClass *a,
 /*  public functions  */
 
 GList *
-gimp_gegl_get_op_classes (void)
+gimp_gegl_get_op_classes (gboolean block_gimp_ops)
 {
   GList *operations;
 
-  operations = gimp_gegl_get_op_subclasses (GEGL_TYPE_OPERATION, NULL);
+  operations = gimp_gegl_get_op_subclasses (GEGL_TYPE_OPERATION, NULL, block_gimp_ops);
 
   operations = g_list_sort (operations,
                             (GCompareFunc)
@@ -473,7 +475,8 @@ gimp_gegl_buffer_set_extent (GeglBuffer          *buffer,
 
 static gboolean
 gimp_gegl_op_blacklisted (const gchar *name,
-                          const gchar *categories_str)
+                          const gchar *categories_str,
+                          gboolean     block_gimp_ops)
 {
   static const gchar * const category_blacklist[] =
   {
@@ -534,7 +537,7 @@ gimp_gegl_op_blacklisted (const gchar *name,
   if (g_getenv ("GIMP_TESTING_NO_GEGL_BLACKLIST"))
     return FALSE;
 
-  if (g_str_has_prefix (name, "gimp"))
+  if (block_gimp_ops && g_str_has_prefix (name, "gimp"))
     return TRUE;
 
   for (i = 0; i < G_N_ELEMENTS (name_blacklist); i++)
@@ -568,8 +571,9 @@ gimp_gegl_op_blacklisted (const gchar *name,
 /* Builds a GList of the class structures of all subtypes of type.
  */
 static GList *
-gimp_gegl_get_op_subclasses (GType  type,
-                             GList *classes)
+gimp_gegl_get_op_subclasses (GType     type,
+                             GList    *classes,
+                             gboolean  block_gimp_ops)
 {
   GeglOperationClass *klass;
   GType              *ops;
@@ -585,11 +589,11 @@ gimp_gegl_get_op_subclasses (GType  type,
 
   categories = gegl_operation_class_get_key (klass, "categories");
 
-  if (! gimp_gegl_op_blacklisted (klass->name, categories))
+  if (! gimp_gegl_op_blacklisted (klass->name, categories, block_gimp_ops))
     classes = g_list_prepend (classes, klass);
 
   for (i = 0; i < n_ops; i++)
-    classes = gimp_gegl_get_op_subclasses (ops[i], classes);
+    classes = gimp_gegl_get_op_subclasses (ops[i], classes, block_gimp_ops);
 
   if (ops)
     g_free (ops);
diff --git a/app/gegl/gimp-gegl-utils.h b/app/gegl/gimp-gegl-utils.h
index 8f460be31b..20d284b2b4 100644
--- a/app/gegl/gimp-gegl-utils.h
+++ b/app/gegl/gimp-gegl-utils.h
@@ -21,7 +21,7 @@
 #pragma once
 
 
-GList       * gimp_gegl_get_op_classes                (void);
+GList       * gimp_gegl_get_op_classes                (gboolean             block_gimp_ops);
 
 GType         gimp_gegl_get_op_enum_type              (const gchar         *operation,
                                                        const gchar         *property);
diff --git a/app/tools/gimpgegltool.c b/app/tools/gimpgegltool.c
index 5b6c72c907..0b66435a13 100644
--- a/app/tools/gimpgegltool.c
+++ b/app/tools/gimpgegltool.c
@@ -166,7 +166,7 @@ gimp_gegl_tool_dialog (GimpFilterTool *filter_tool)
   store = gtk_list_store_new (N_COLUMNS,
                               G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
 
-  opclasses = gimp_gegl_get_op_classes ();
+  opclasses = gimp_gegl_get_op_classes (TRUE);
 
   for (iter = opclasses; iter; iter = iter->next)
     {