diff --git a/av1/encoder/rd.h b/av1/encoder/rd.h
index 276c473..f4c22fa 100644
--- a/av1/encoder/rd.h
+++ b/av1/encoder/rd.h
@@ -293,7 +293,7 @@
 void av1_fill_coeff_costs(MACROBLOCK *x, FRAME_CONTEXT *fc,
                           const int num_planes);
 
-void av1_fill_mv_costs(const FRAME_CONTEXT *const fc, int integer_mv, int usehp,
+void av1_fill_mv_costs(const FRAME_CONTEXT *fc, int integer_mv, int usehp,
                        MACROBLOCK *x);
 
 int av1_get_adaptive_rdmult(const struct AV1_COMP *cpi, double beta);