diff --git a/vp8/encoder/mcomp.c b/vp8/encoder/mcomp.c
index 416948870..6f314a386 100644
--- a/vp8/encoder/mcomp.c
+++ b/vp8/encoder/mcomp.c
@@ -286,8 +286,8 @@ int vp8_find_best_sub_pixel_step_iteratively(MACROBLOCK *x, BLOCK *b, BLOCKD *d,
     bestmv->as_mv.row = br << 1;
     bestmv->as_mv.col = bc << 1;
 
-    if ((abs(bestmv->as_mv.col - ref_mv->as_mv.col) > MAX_FULL_PEL_VAL) ||
-        (abs(bestmv->as_mv.row - ref_mv->as_mv.row) > MAX_FULL_PEL_VAL))
+    if ((abs(bestmv->as_mv.col - ref_mv->as_mv.col) > (MAX_FULL_PEL_VAL<<3)) ||
+        (abs(bestmv->as_mv.row - ref_mv->as_mv.row) > (MAX_FULL_PEL_VAL<<3)))
         return INT_MAX;
 
     return besterr;
diff --git a/vp8/encoder/mcomp.h b/vp8/encoder/mcomp.h
index 44ed055db..416c4d5eb 100644
--- a/vp8/encoder/mcomp.h
+++ b/vp8/encoder/mcomp.h
@@ -22,7 +22,7 @@ extern void accum_mv_refs(MB_PREDICTION_MODE, const int near_mv_ref_cts[4]);
 
 
 #define MAX_MVSEARCH_STEPS 8                                    // The maximum number of steps in a step search given the largest allowed initial step
-#define MAX_FULL_PEL_VAL ((1 << (MAX_MVSEARCH_STEPS+3)) - 8)    // Max full pel mv specified in 1/8 pel units
+#define MAX_FULL_PEL_VAL ((1 << (MAX_MVSEARCH_STEPS)) - 1)      // Max full pel mv specified in 1 pel units
 #define MAX_FIRST_STEP (1 << (MAX_MVSEARCH_STEPS-1))            // Maximum size of the first step in full pel units
 
 extern void print_mode_context(void);
diff --git a/vp8/encoder/pickinter.c b/vp8/encoder/pickinter.c
index b60d2419f..6c73511a9 100644
--- a/vp8/encoder/pickinter.c
+++ b/vp8/encoder/pickinter.c
@@ -588,10 +588,10 @@ void vp8_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
 
             /* adjust mvp to make sure it is within MV range */
             vp8_clamp_mv(&mvp,
-                         best_ref_mv.as_mv.col - MAX_FULL_PEL_VAL,
-                         best_ref_mv.as_mv.col + MAX_FULL_PEL_VAL,
-                         best_ref_mv.as_mv.row - MAX_FULL_PEL_VAL,
-                         best_ref_mv.as_mv.row + MAX_FULL_PEL_VAL);
+                         best_ref_mv.as_mv.col - (MAX_FULL_PEL_VAL<<3),
+                         best_ref_mv.as_mv.col + (MAX_FULL_PEL_VAL<<3),
+                         best_ref_mv.as_mv.row - (MAX_FULL_PEL_VAL<<3),
+                         best_ref_mv.as_mv.row + (MAX_FULL_PEL_VAL<<3));
         }
 
         switch (this_mode)
@@ -681,10 +681,14 @@ void vp8_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
                 mvp.as_int = best_ref_mv.as_int;
             }
 
-            col_min = (best_ref_mv.as_mv.col - MAX_FULL_PEL_VAL) >>3;
-            col_max = (best_ref_mv.as_mv.col + MAX_FULL_PEL_VAL) >>3;
-            row_min = (best_ref_mv.as_mv.row - MAX_FULL_PEL_VAL) >>3;
-            row_max = (best_ref_mv.as_mv.row + MAX_FULL_PEL_VAL) >>3;
+            col_min = (best_ref_mv.as_mv.col < 0)?(-((abs(best_ref_mv.as_mv.col))>>3) - MAX_FULL_PEL_VAL)
+                                                 :((best_ref_mv.as_mv.col>>3) - MAX_FULL_PEL_VAL);
+            col_max = (best_ref_mv.as_mv.col < 0)?(-((abs(best_ref_mv.as_mv.col))>>3) + MAX_FULL_PEL_VAL)
+                                                 :((best_ref_mv.as_mv.col>>3) + MAX_FULL_PEL_VAL);
+            row_min = (best_ref_mv.as_mv.row < 0)?(-((abs(best_ref_mv.as_mv.row))>>3) - MAX_FULL_PEL_VAL)
+                                                 :((best_ref_mv.as_mv.row>>3) - MAX_FULL_PEL_VAL);
+            row_max = (best_ref_mv.as_mv.row < 0)?(-((abs(best_ref_mv.as_mv.row))>>3) + MAX_FULL_PEL_VAL)
+                                                 :((best_ref_mv.as_mv.row>>3) + MAX_FULL_PEL_VAL);
 
             // Get intersection of UMV window and valid MV window to reduce # of checks in diamond search.
             if (x->mv_col_min < col_min )
diff --git a/vp8/encoder/rdopt.c b/vp8/encoder/rdopt.c
index e0359057a..fa5bb079b 100644
--- a/vp8/encoder/rdopt.c
+++ b/vp8/encoder/rdopt.c
@@ -1330,10 +1330,14 @@ static int vp8_rd_pick_best_mbsegmentation(VP8_COMP *cpi, MACROBLOCK *x,
 
         if (bsi.segment_rd < best_rd)
         {
-            int col_min = (best_ref_mv->as_mv.col - MAX_FULL_PEL_VAL) >>3;
-            int col_max = (best_ref_mv->as_mv.col + MAX_FULL_PEL_VAL) >>3;
-            int row_min = (best_ref_mv->as_mv.row - MAX_FULL_PEL_VAL) >>3;
-            int row_max = (best_ref_mv->as_mv.row + MAX_FULL_PEL_VAL) >>3;
+            int col_min = (best_ref_mv->as_mv.col < 0)?(-((abs(best_ref_mv->as_mv.col))>>3) - MAX_FULL_PEL_VAL)
+                                                      :((best_ref_mv->as_mv.col>>3) - MAX_FULL_PEL_VAL);
+            int col_max = (best_ref_mv->as_mv.col < 0)?(-((abs(best_ref_mv->as_mv.col))>>3) + MAX_FULL_PEL_VAL)
+                                                      :((best_ref_mv->as_mv.col>>3) + MAX_FULL_PEL_VAL);
+            int row_min = (best_ref_mv->as_mv.row < 0)?(-((abs(best_ref_mv->as_mv.row))>>3) - MAX_FULL_PEL_VAL)
+                                                      :((best_ref_mv->as_mv.row>>3) - MAX_FULL_PEL_VAL);
+            int row_max = (best_ref_mv->as_mv.row < 0)?(-((abs(best_ref_mv->as_mv.row))>>3) + MAX_FULL_PEL_VAL)
+                                                      :((best_ref_mv->as_mv.row>>3) + MAX_FULL_PEL_VAL);
 
             int tmp_col_min = x->mv_col_min;
             int tmp_col_max = x->mv_col_max;
@@ -1876,10 +1880,10 @@ void vp8_rd_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset, int
 
             /* adjust mvp to make sure it is within MV range */
             vp8_clamp_mv(&mvp,
-                         best_ref_mv.as_mv.col - MAX_FULL_PEL_VAL,
-                         best_ref_mv.as_mv.col + MAX_FULL_PEL_VAL,
-                         best_ref_mv.as_mv.row - MAX_FULL_PEL_VAL,
-                         best_ref_mv.as_mv.row + MAX_FULL_PEL_VAL);
+                         best_ref_mv.as_mv.col - (MAX_FULL_PEL_VAL<<3),
+                         best_ref_mv.as_mv.col + (MAX_FULL_PEL_VAL<<3),
+                         best_ref_mv.as_mv.row - (MAX_FULL_PEL_VAL<<3),
+                         best_ref_mv.as_mv.row + (MAX_FULL_PEL_VAL<<3));
         }
 
         // Check to see if the testing frequency for this mode is at its max
@@ -2011,10 +2015,14 @@ void vp8_rd_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset, int
 
             int sadpb = x->sadperbit16;
 
-            int col_min = (best_ref_mv.as_mv.col - MAX_FULL_PEL_VAL) >>3;
-            int col_max = (best_ref_mv.as_mv.col + MAX_FULL_PEL_VAL) >>3;
-            int row_min = (best_ref_mv.as_mv.row - MAX_FULL_PEL_VAL) >>3;
-            int row_max = (best_ref_mv.as_mv.row + MAX_FULL_PEL_VAL) >>3;
+            int col_min = (best_ref_mv.as_mv.col < 0)?(-((abs(best_ref_mv.as_mv.col))>>3) - MAX_FULL_PEL_VAL)
+                                                     :((best_ref_mv.as_mv.col>>3) - MAX_FULL_PEL_VAL);
+            int col_max = (best_ref_mv.as_mv.col < 0)?(-((abs(best_ref_mv.as_mv.col))>>3) + MAX_FULL_PEL_VAL)
+                                                     :((best_ref_mv.as_mv.col>>3) + MAX_FULL_PEL_VAL);
+            int row_min = (best_ref_mv.as_mv.row < 0)?(-((abs(best_ref_mv.as_mv.row))>>3) - MAX_FULL_PEL_VAL)
+                                                     :((best_ref_mv.as_mv.row>>3) - MAX_FULL_PEL_VAL);
+            int row_max = (best_ref_mv.as_mv.row < 0)?(-((abs(best_ref_mv.as_mv.row))>>3) + MAX_FULL_PEL_VAL)
+                                                     :((best_ref_mv.as_mv.row>>3) + MAX_FULL_PEL_VAL);
 
             int tmp_col_min = x->mv_col_min;
             int tmp_col_max = x->mv_col_max;