diff --git a/src/util/register_allocate.h b/src/util/register_allocate.h
index f4e7b4174ca..14f2be4023a 100644
--- a/src/util/register_allocate.h
+++ b/src/util/register_allocate.h
@@ -68,8 +68,6 @@ ra_add_transitive_reg_pair_conflict(struct ra_regs *regs,
 void ra_make_reg_conflicts_transitive(struct ra_regs *regs, unsigned int reg);
 void ra_class_add_reg(struct ra_class *c, unsigned int reg);
 struct ra_class *ra_get_class_from_index(struct ra_regs *regs, unsigned int c);
-void ra_set_num_conflicts(struct ra_regs *regs, unsigned int class_a,
-                          unsigned int class_b, unsigned int num_conflicts);
 void ra_set_finalize(struct ra_regs *regs, unsigned int **conflicts);
 
 void ra_set_serialize(const struct ra_regs *regs, struct blob *blob);