diff --git a/src/northbridge/intel/i945/chip.h b/src/northbridge/intel/i945/chip.h
index 0de0e58..8153462 100644
--- a/src/northbridge/intel/i945/chip.h
+++ b/src/northbridge/intel/i945/chip.h
@@ -4,6 +4,7 @@
 #define NORTHBRIDGE_INTEL_I945_CHIP_H
 
 #include <drivers/intel/gma/i915.h>
+#include <types.h>
 
 struct northbridge_intel_i945_config {
 	/* In units of 100us timer */
@@ -17,7 +18,7 @@
 
 	u32 gpu_hotplug;
 	u32 pwm_freq;
-	int gpu_lvds_use_spread_spectrum_clock;
+	bool gpu_lvds_use_spread_spectrum_clock;
 	struct i915_gpu_controller_info gfx;
 	int pci_mmio_size;
 };