diff --git a/src/soc/intel/apollolake/systemagent.c b/src/soc/intel/apollolake/systemagent.c
index d6e23ac..f352f8a 100644
--- a/src/soc/intel/apollolake/systemagent.c
+++ b/src/soc/intel/apollolake/systemagent.c
@@ -32,13 +32,13 @@
 		return;
 
 	if (MCHBAR32(GFXVTBAR) & VTBAR_ENABLED) {
-		mmio_resource(dev, *index,
+		mmio_resource_kb(dev, *index,
 			      (MCHBAR64(GFXVTBAR) & VTBAR_MASK) / KiB,
 			      VTBAR_SIZE / KiB);
 		(*index)++;
 	}
 	if (MCHBAR32(DEFVTBAR) & VTBAR_ENABLED) {
-		mmio_resource(dev, *index,
+		mmio_resource_kb(dev, *index,
 			      (MCHBAR64(DEFVTBAR) & VTBAR_MASK) / KiB,
 			      VTBAR_SIZE / KiB);
 		(*index)++;