diff --git a/drivers/pinctrl/pinctrl-u300.c b/drivers/pinctrl/pinctrl-u300.c
index d1af908a706036de500085f01723632aa1cc804a..9cc80a500880f8285d90b33277b876e950e30460 100644
--- a/drivers/pinctrl/pinctrl-u300.c
+++ b/drivers/pinctrl/pinctrl-u300.c
@@ -670,7 +670,7 @@ struct u300_pmx {
  * u300_pmx_registers - the array of registers read/written for each pinmux
  * shunt setting
  */
-const u32 u300_pmx_registers[] = {
+static const u32 u300_pmx_registers[] = {
 	U300_SYSCON_PMC1LR,
 	U300_SYSCON_PMC1HR,
 	U300_SYSCON_PMC2R,