diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c
index d905e844bf3a..4d89ad4fae3b 100644
--- a/kernel/irq/affinity.c
+++ b/kernel/irq/affinity.c
@@ -126,7 +126,7 @@ static int ncpus_cmp_func(const void *l, const void *r)
  * for each node.
  */
 static void alloc_nodes_vectors(unsigned int numvecs,
-				const cpumask_var_t *node_to_cpumask,
+				cpumask_var_t *node_to_cpumask,
 				const struct cpumask *cpu_mask,
 				const nodemask_t nodemsk,
 				struct cpumask *nmsk,