diff --git a/app/operations/gimpoperationbrightnesscontrast.c b/app/operations/gimpoperationbrightnesscontrast.c
index 1dd9186761..abac61db8e 100644
--- a/app/operations/gimpoperationbrightnesscontrast.c
+++ b/app/operations/gimpoperationbrightnesscontrast.c
@@ -61,6 +61,7 @@ gimp_operation_brightness_contrast_class_init (GimpOperationBrightnessContrastCl
 
   gegl_operation_class_set_keys (operation_class,
                                  "name",        "gimp:brightness-contrast",
+                                 "title",       _("Brightness-Contrast"),
                                  "categories",  "color",
                                  "description", _("Adjust brightness and contrast"),
                                  NULL);
diff --git a/app/operations/gimpoperationcurves.c b/app/operations/gimpoperationcurves.c
index 34f315625a..6c81f38bcf 100644
--- a/app/operations/gimpoperationcurves.c
+++ b/app/operations/gimpoperationcurves.c
@@ -63,6 +63,7 @@ gimp_operation_curves_class_init (GimpOperationCurvesClass *klass)
 
   gegl_operation_class_set_keys (operation_class,
                                  "name",        "gimp:curves",
+                                 "title",       _("Curves"),
                                  "categories",  "color",
                                  "description", _("Adjust color curves"),
                                  NULL);
diff --git a/app/operations/gimpoperationlevels.c b/app/operations/gimpoperationlevels.c
index e06534473d..e67090cefa 100644
--- a/app/operations/gimpoperationlevels.c
+++ b/app/operations/gimpoperationlevels.c
@@ -60,6 +60,7 @@ gimp_operation_levels_class_init (GimpOperationLevelsClass *klass)
 
   gegl_operation_class_set_keys (operation_class,
                                  "name",        "gimp:levels",
+                                 "title",       _("Levels"),
                                  "categories",  "color",
                                  "description", _("Adjust color levels"),
                                  NULL);
diff --git a/app/operations/gimpoperationthreshold.c b/app/operations/gimpoperationthreshold.c
index afbbc049f4..296fd00934 100644
--- a/app/operations/gimpoperationthreshold.c
+++ b/app/operations/gimpoperationthreshold.c
@@ -85,6 +85,7 @@ gimp_operation_threshold_class_init (GimpOperationThresholdClass *klass)
 
   gegl_operation_class_set_keys (operation_class,
                                  "name",        "gimp:threshold",
+                                 "title",       _("Threshold"),
                                  "categories",  "color",
                                  "description", _("Reduce image to two colors using a threshold"),
                                  NULL);