diff --git a/gtk/gtkhsla.c b/gtk/gtkhsla.c
index 9692e3e59f..ad1298df70 100644
--- a/gtk/gtkhsla.c
+++ b/gtk/gtkhsla.c
@@ -21,24 +21,6 @@
 
 #include <math.h>
 
-void
-_gtk_hsla_init (GtkHSLA *hsla,
-                float    hue,
-                float    saturation,
-                float    lightness,
-                float    alpha)
-{
-  g_return_if_fail (hsla != NULL);
-
-  if (hue >= 0)
-    hsla->hue = fmod (hue, 360);
-  else
-    hsla->hue = fmod (hue, 360) + 360;
-  hsla->saturation = CLAMP (saturation, 0, 1);
-  hsla->lightness = CLAMP (lightness, 0, 1);
-  hsla->alpha = CLAMP (alpha, 0, 1);
-}
-
 void
 _gtk_hsla_init_from_rgba (GtkHSLA       *hsla,
                           const GdkRGBA *rgba)
diff --git a/gtk/gtkhslaprivate.h b/gtk/gtkhslaprivate.h
index 145daf7461..304dcfb899 100644
--- a/gtk/gtkhslaprivate.h
+++ b/gtk/gtkhslaprivate.h
@@ -31,11 +31,6 @@ struct _GtkHSLA {
   float alpha;
 };
 
-void            _gtk_hsla_init              (GtkHSLA          *hsla,
-                                             float             hue,
-                                             float             saturation,
-                                             float             lightness,
-                                             float             alpha);
 void            _gtk_hsla_init_from_rgba    (GtkHSLA          *hsla,
                                              const GdkRGBA    *rgba);
 /* Yes, I can name that function like this! */