diff --git a/app/paint-funcs/paint-funcs-generic.h b/app/paint-funcs/paint-funcs-generic.h
index 7a56e8f42d..b11a61fca6 100644
--- a/app/paint-funcs/paint-funcs-generic.h
+++ b/app/paint-funcs/paint-funcs-generic.h
@@ -189,29 +189,6 @@ scale_pixels (const guchar *src,
     }
 }
 
-inline void
-add_alpha_pixels (const guchar *src,
-                  guchar       *dest,
-                  guint         length,
-                  guint         bytes)
-{
-  const guint alpha = bytes + 1;
-
-  while (length --)
-    {
-      guint b;
-
-      for (b = 0; b < bytes; b++)
-        dest[b] = src[b];
-
-      dest[b] = OPAQUE_OPACITY;
-
-      src += bytes;
-      dest += alpha;
-    }
-}
-
-
 inline void
 gray_to_rgb_pixels (const guchar *src,
                     guchar       *dest,
diff --git a/app/paint-funcs/paint-funcs.c b/app/paint-funcs/paint-funcs.c
index 3887c79f5e..041ce1fff3 100644
--- a/app/paint-funcs/paint-funcs.c
+++ b/app/paint-funcs/paint-funcs.c
@@ -1714,31 +1714,6 @@ copy_region (PixelRegion *src,
 }
 
 
-void
-add_alpha_region (PixelRegion *src,
-                  PixelRegion *dest)
-{
-  gpointer pr;
-
-  for (pr = pixel_regions_register (2, src, dest);
-       pr != NULL;
-       pr = pixel_regions_process (pr))
-    {
-      const guchar *s = src->data;
-      guchar       *d = dest->data;
-      gint          h = src->h;
-
-      while (h --)
-        {
-          add_alpha_pixels (s, d, src->w, src->bytes);
-
-          s += src->rowstride;
-          d += dest->rowstride;
-        }
-    }
-}
-
-
 void
 convolve_region (PixelRegion         *srcR,
                  PixelRegion         *destR,
diff --git a/app/paint-funcs/paint-funcs.h b/app/paint-funcs/paint-funcs.h
index 717e2b8e4e..583b5e9018 100644
--- a/app/paint-funcs/paint-funcs.h
+++ b/app/paint-funcs/paint-funcs.h
@@ -33,11 +33,6 @@ void  scale_pixels          (const guchar *src,
                              guint         length,
                              gint          scale);
 
-void  add_alpha_pixels      (const guchar *src,
-                             guchar       *dest,
-                             guint         length,
-                             guint         bytes);
-
 void  gray_to_rgb_pixels    (const guchar *src,
                              guchar       *dest,
                              guint         length,
@@ -266,9 +261,6 @@ void  blend_region                        (PixelRegion *src1,
 void  copy_region                         (PixelRegion *src,
                                            PixelRegion *dest);
 
-void  add_alpha_region                    (PixelRegion *src,
-                                           PixelRegion *dest);
-
 void  convolve_region                     (PixelRegion         *srcR,
                                            PixelRegion         *destR,
                                            const gfloat        *matrix,