diff --git a/vp8/decoder/dboolhuff.c b/vp8/decoder/dboolhuff.c
index 1539f8ba1fe259d1386230b88d9dc50d721b730d..54d0fd10738257175e214731687b7a6c4edcb497 100644
--- a/vp8/decoder/dboolhuff.c
+++ b/vp8/decoder/dboolhuff.c
@@ -60,7 +60,7 @@ static int get_unsigned_bits(unsigned num_values) {
   return cat;
 }
 
-int inv_recenter_nonneg(int v, int m) {
+int vp9_inv_recenter_nonneg(int v, int m) {
   if (v > (m << 1)) return v;
   else if ((v & 1) == 0) return (v >> 1) + m;
   else return m - ((v + 1) >> 1);
diff --git a/vp8/decoder/dboolhuff.h b/vp8/decoder/dboolhuff.h
index 8768e62f123f19beac8f4e1bb97b8ea038b00e0a..e5107d449336be416e9183848f994128c26ec0b5 100644
--- a/vp8/decoder/dboolhuff.h
+++ b/vp8/decoder/dboolhuff.h
@@ -43,7 +43,7 @@ void vp8dx_bool_decoder_fill(BOOL_DECODER *br);
 
 int vp8_decode_uniform(BOOL_DECODER *br, int n);
 int vp8_decode_term_subexp(BOOL_DECODER *br, int k, int num_syms);
-int inv_recenter_nonneg(int v, int m);
+int vp9_inv_recenter_nonneg(int v, int m);
 
 /*The refill loop is used in several places, so define it in a macro to make
    sure they're all consistent.
diff --git a/vp8/decoder/decodframe.c b/vp8/decoder/decodframe.c
index 450e41f85b542383d47cae7a47cccc8bc218accf..a7996760e5bfa964ff944b3cb9f767d3ee990ac5 100644
--- a/vp8/decoder/decodframe.c
+++ b/vp8/decoder/decodframe.c
@@ -62,9 +62,9 @@ static int inv_remap_prob(int v, int m) {
   int i;
   v = merge_index(v, n - 1, modulus);
   if ((m << 1) <= n) {
-    i = inv_recenter_nonneg(v + 1, m);
+    i = vp9_inv_recenter_nonneg(v + 1, m);
   } else {
-    i = n - 1 - inv_recenter_nonneg(v + 1, n - 1 - m);
+    i = n - 1 - vp9_inv_recenter_nonneg(v + 1, n - 1 - m);
   }
   return i;
 }
diff --git a/vp8/encoder/bitstream.c b/vp8/encoder/bitstream.c
index 92ef46905867a8fa8b4f9a8dc8c9ffed210f20c0..021a9075cfdba85afa7894e7b043dee49fc60c23 100644
--- a/vp8/encoder/bitstream.c
+++ b/vp8/encoder/bitstream.c
@@ -98,9 +98,9 @@ static int remap_prob(int v, int m) {
   const int modulus = MODULUS_PARAM;
   int i;
   if ((m << 1) <= n)
-    i = recenter_nonneg(v, m) - 1;
+    i = vp9_recenter_nonneg(v, m) - 1;
   else
-    i = recenter_nonneg(n - 1 - v, n - 1 - m) - 1;
+    i = vp9_recenter_nonneg(n - 1 - v, n - 1 - m) - 1;
 
   i = split_index(i, n - 1, modulus);
   return i;
diff --git a/vp8/encoder/boolhuff.c b/vp8/encoder/boolhuff.c
index 15fe24136d908b51d9795c2d4a759688dfa2c78e..9206e55967c430b3bdd1823b7366bc97343b5cb2 100644
--- a/vp8/encoder/boolhuff.c
+++ b/vp8/encoder/boolhuff.c
@@ -65,7 +65,7 @@ void vp8_encode_value(BOOL_CODER *br, int data, int bits) {
 
 }
 
-int recenter_nonneg(int v, int m) {
+int vp9_recenter_nonneg(int v, int m) {
   if (v > (m << 1)) return v;
   else if (v >= m) return ((v - m) << 1);
   else return ((m - v) << 1) - 1;
diff --git a/vp8/encoder/boolhuff.h b/vp8/encoder/boolhuff.h
index ac9426911f6d55eca80c83178a983fef4841ade1..6c86509c6cc87cf110648a276b16657496721863 100644
--- a/vp8/encoder/boolhuff.h
+++ b/vp8/encoder/boolhuff.h
@@ -44,7 +44,7 @@ extern void vp8_encode_uniform(BOOL_CODER *bc, int v, int n);
 extern void vp8_encode_term_subexp(BOOL_CODER *bc, int v, int k, int n);
 extern int vp8_count_uniform(int v, int n);
 extern int vp8_count_term_subexp(int v, int k, int n);
-extern int recenter_nonneg(int v, int m);
+extern int vp9_recenter_nonneg(int v, int m);
 
 DECLARE_ALIGNED(16, extern const unsigned char, vp8_norm[256]);