diff --git a/src/mesa/program/register_allocate.c b/src/mesa/program/register_allocate.c
index 88793dbdc1e..d5acc9f624e 100644
--- a/src/mesa/program/register_allocate.c
+++ b/src/mesa/program/register_allocate.c
@@ -545,7 +545,7 @@ int
 ra_get_best_spill_node(struct ra_graph *g)
 {
    unsigned int best_node = -1;
-   unsigned int best_benefit = 0.0;
+   float best_benefit = 0.0;
    unsigned int n;
 
    for (n = 0; n < g->count; n++) {