diff --git a/sys/arm/arm/gic.c b/sys/arm/arm/gic.c
index ba25c1d0fe10..2871d9de24b0 100644
--- a/sys/arm/arm/gic.c
+++ b/sys/arm/arm/gic.c
@@ -134,6 +134,9 @@ gic_init_secondary(void)
 	/* Enable CPU interface */
 	gic_c_write_4(GICC_CTLR, 1);
 
+	/* Set priority mask register. */
+	gic_c_write_4(GICC_PMR, 0xff);
+
 	/* Enable interrupt distribution */
 	gic_d_write_4(GICD_CTLR, 0x01);
 		
@@ -199,6 +202,9 @@ arm_gic_attach(device_t dev)
 	/* Enable CPU interface */
 	gic_c_write_4(GICC_CTLR, 1);
 
+	/* Set priority mask register. */
+	gic_c_write_4(GICC_PMR, 0xff);
+
 	/* Enable interrupt distribution */
 	gic_d_write_4(GICD_CTLR, 0x01);