diff --git a/src/PIL/Image.py b/src/PIL/Image.py
index e0fb6a885..fa70f674b 100644
--- a/src/PIL/Image.py
+++ b/src/PIL/Image.py
@@ -1254,7 +1254,7 @@ class Image:
         if ymargin is None:
             ymargin = xmargin
         self.load()
-        return self._new(self.im.expand(xmargin, ymargin, 0))
+        return self._new(self.im.expand(xmargin, ymargin))
 
     def filter(self, filter):
         """
diff --git a/src/_imaging.c b/src/_imaging.c
index 281f3a4d2..5c6380fee 100644
--- a/src/_imaging.c
+++ b/src/_imaging.c
@@ -1027,12 +1027,11 @@ _crop(ImagingObject *self, PyObject *args) {
 static PyObject *
 _expand_image(ImagingObject *self, PyObject *args) {
     int x, y;
-    int mode = 0;
-    if (!PyArg_ParseTuple(args, "ii|i", &x, &y, &mode)) {
+    if (!PyArg_ParseTuple(args, "ii", &x, &y)) {
         return NULL;
     }
 
-    return PyImagingNew(ImagingExpand(self->image, x, y, mode));
+    return PyImagingNew(ImagingExpand(self->image, x, y));
 }
 
 static PyObject *
diff --git a/src/libImaging/Filter.c b/src/libImaging/Filter.c
index 4b8d2bf05..4dcd368ca 100644
--- a/src/libImaging/Filter.c
+++ b/src/libImaging/Filter.c
@@ -49,7 +49,7 @@ clip32(float in) {
 }
 
 Imaging
-ImagingExpand(Imaging imIn, int xmargin, int ymargin, int mode) {
+ImagingExpand(Imaging imIn, int xmargin, int ymargin) {
     Imaging imOut;
     int x, y;
     ImagingSectionCookie cookie;
diff --git a/src/libImaging/Imaging.h b/src/libImaging/Imaging.h
index d9ded1852..beec8a8f2 100644
--- a/src/libImaging/Imaging.h
+++ b/src/libImaging/Imaging.h
@@ -290,7 +290,7 @@ ImagingConvertTransparent(Imaging im, const char *mode, int r, int g, int b);
 extern Imaging
 ImagingCrop(Imaging im, int x0, int y0, int x1, int y1);
 extern Imaging
-ImagingExpand(Imaging im, int x, int y, int mode);
+ImagingExpand(Imaging im, int x, int y);
 extern Imaging
 ImagingFill(Imaging im, const void *ink);
 extern int