diff --git a/vp9/decoder/vp9_decodeframe.c b/vp9/decoder/vp9_decodeframe.c
index 56b993d5f..d8590fd68 100644
--- a/vp9/decoder/vp9_decodeframe.c
+++ b/vp9/decoder/vp9_decodeframe.c
@@ -1198,8 +1198,7 @@ static size_t read_uncompressed_header(VP9D_COMP *pbi,
                                           ref_buf->buf->y_crop_height,
                                           cm->width, cm->height);
         if (vp9_is_scaled(&ref_buf->sf))
-          vp9_extend_frame_borders(ref_buf->buf,
-                                   cm->subsampling_x, cm->subsampling_y);
+          vp9_extend_frame_borders(ref_buf->buf);
       }
     }
   }
diff --git a/vp9/encoder/vp9_firstpass.c b/vp9/encoder/vp9_firstpass.c
index 32ed96999..8867899f3 100644
--- a/vp9/encoder/vp9_firstpass.c
+++ b/vp9/encoder/vp9_firstpass.c
@@ -807,7 +807,7 @@ void vp9_first_pass(VP9_COMP *cpi) {
   // Swap frame pointers so last frame refers to the frame we just compressed.
   swap_yv12(lst_yv12, new_yv12);
 
-  vp9_extend_frame_borders(lst_yv12, cm->subsampling_x, cm->subsampling_y);
+  vp9_extend_frame_borders(lst_yv12);
 
   // Special case for the first frame. Copy into the GF buffer as a second
   // reference.
diff --git a/vp9/encoder/vp9_onyx_if.c b/vp9/encoder/vp9_onyx_if.c
index 3921ea8eb..2242cb718 100644
--- a/vp9/encoder/vp9_onyx_if.c
+++ b/vp9/encoder/vp9_onyx_if.c
@@ -2674,8 +2674,7 @@ static void loopfilter_frame(VP9_COMP *cpi, VP9_COMMON *cm) {
     vp9_loop_filter_frame(cm, xd, lf->filter_level, 0, 0);
   }
 
-  vp9_extend_frame_inner_borders(cm->frame_to_show,
-                                 cm->subsampling_x, cm->subsampling_y);
+  vp9_extend_frame_inner_borders(cm->frame_to_show);
 }
 
 static void scale_references(VP9_COMP *cpi) {
@@ -3583,8 +3582,7 @@ int vp9_get_compressed_data(VP9_PTR ptr, unsigned int *frame_flags,
         // TODO(agrange) merge these two functions.
         vp9_configure_arnr_filter(cpi, frames_to_arf, cpi->rc.gfu_boost);
         vp9_temporal_filter_prepare(cpi, frames_to_arf);
-        vp9_extend_frame_borders(&cpi->alt_ref_buffer,
-                                 cm->subsampling_x, cm->subsampling_y);
+        vp9_extend_frame_borders(&cpi->alt_ref_buffer);
         force_src_buffer = &cpi->alt_ref_buffer;
       }
 
@@ -3720,7 +3718,7 @@ int vp9_get_compressed_data(VP9_PTR ptr, unsigned int *frame_flags,
                                       cm->width, cm->height);
 
     if (vp9_is_scaled(&ref_buf->sf))
-      vp9_extend_frame_borders(buf, cm->subsampling_x, cm->subsampling_y);
+      vp9_extend_frame_borders(buf);
   }
 
   set_ref_ptrs(cm, xd, LAST_FRAME, LAST_FRAME);
diff --git a/vpx_scale/generic/yv12extend.c b/vpx_scale/generic/yv12extend.c
index 7896dfee6..7b43eece2 100644
--- a/vpx_scale/generic/yv12extend.c
+++ b/vpx_scale/generic/yv12extend.c
@@ -81,9 +81,7 @@ void vp8_yv12_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) {
 }
 
 #if CONFIG_VP9
-static void extend_frame(YV12_BUFFER_CONFIG *const ybf,
-                         int subsampling_x, int subsampling_y,
-                         int ext_size) {
+static void extend_frame(YV12_BUFFER_CONFIG *const ybf, int ext_size) {
   const int c_w = ybf->uv_crop_width;
   const int c_h = ybf->uv_crop_height;
   const int c_ext_size = ext_size >> 1;
@@ -110,16 +108,14 @@ static void extend_frame(YV12_BUFFER_CONFIG *const ybf,
                c_w, c_h, c_et, c_el, c_eb, c_er);
 }
 
-void vp9_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf,
-                                int subsampling_x, int subsampling_y) {
-  extend_frame(ybf, subsampling_x, subsampling_y, ybf->border);
+void vp9_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) {
+  extend_frame(ybf, ybf->border);
 }
 
-void vp9_extend_frame_inner_borders_c(YV12_BUFFER_CONFIG *ybf,
-                                      int subsampling_x, int subsampling_y) {
+void vp9_extend_frame_inner_borders_c(YV12_BUFFER_CONFIG *ybf) {
   const int inner_bw = (ybf->border > VP9INNERBORDERINPIXELS) ?
                        VP9INNERBORDERINPIXELS : ybf->border;
-  extend_frame(ybf, subsampling_x, subsampling_y, inner_bw);
+  extend_frame(ybf, inner_bw);
 }
 #endif  // CONFIG_VP9
 
diff --git a/vpx_scale/vpx_scale_rtcd.sh b/vpx_scale/vpx_scale_rtcd.sh
index 1d02b69d5..c26208c59 100644
--- a/vpx_scale/vpx_scale_rtcd.sh
+++ b/vpx_scale/vpx_scale_rtcd.sh
@@ -26,9 +26,9 @@ prototype void vpx_yv12_copy_y "const struct yv12_buffer_config *src_ybc, struct
 specialize vpx_yv12_copy_y neon
 
 if [ "$CONFIG_VP9" = "yes" ]; then
-    prototype void vp9_extend_frame_borders "struct yv12_buffer_config *ybf, int subsampling_x, int subsampling_y"
+    prototype void vp9_extend_frame_borders "struct yv12_buffer_config *ybf"
     specialize vp9_extend_frame_borders dspr2
 
-    prototype void vp9_extend_frame_inner_borders "struct yv12_buffer_config *ybf, int subsampling_x, int subsampling_y"
+    prototype void vp9_extend_frame_inner_borders "struct yv12_buffer_config *ybf"
     specialize vp9_extend_frame_inner_borders dspr2
 fi