diff --git a/src/northbridge/intel/gm45/gma.c b/src/northbridge/intel/gm45/gma.c
index 026a165..30c8d9a 100644
--- a/src/northbridge/intel/gm45/gma.c
+++ b/src/northbridge/intel/gm45/gma.c
@@ -171,7 +171,8 @@
 					u32 p = candp1 * pixel_p2;
 					u32 vco = DIV_ROUND_CLOSEST(BASE_FREQUENCY * m, candn + 2);
 					u32 dot = DIV_ROUND_CLOSEST(vco, p);
-					u32 this_err = ABS(dot - target_frequency);
+					u32 this_err = MAX(dot, target_frequency) -
+						MIN(dot, target_frequency);
 					if (this_err < smallest_err) {
 						smallest_err = this_err;
 						pixel_n = candn;
@@ -477,7 +478,8 @@
 					u32 p = candp1 * pixel_p2;
 					u32 vco = DIV_ROUND_CLOSEST(BASE_FREQUENCY * m, candn + 2);
 					u32 dot = DIV_ROUND_CLOSEST(vco, p);
-					u32 this_err = ABS(dot - target_frequency);
+					u32 this_err = MAX(dot, target_frequency) -
+						MIN(dot, target_frequency);
 					if (this_err < smallest_err) {
 						smallest_err= this_err;
 						pixel_n = candn;
diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c
index e40b9f0..d8950e6 100644
--- a/src/northbridge/intel/i945/gma.c
+++ b/src/northbridge/intel/i945/gma.c
@@ -177,7 +177,8 @@
 					u32 p = candp1 * pixel_p2;
 					u32 vco = DIV_ROUND_CLOSEST(BASE_FREQUENCY * m, candn + 2);
 					u32 dot = DIV_ROUND_CLOSEST(vco, p);
-					u32 this_err = ABS(dot - target_frequency);
+					u32 this_err = MAX(dot, target_frequency) -
+						MIN(dot, target_frequency);
 					if ((m < 70) || (m > 120))
 						continue;
 					if (this_err < smallest_err) {
diff --git a/src/northbridge/intel/x4x/gma.c b/src/northbridge/intel/x4x/gma.c
index eb419c9..3f3ba2b 100644
--- a/src/northbridge/intel/x4x/gma.c
+++ b/src/northbridge/intel/x4x/gma.c
@@ -191,7 +191,8 @@
 					u32 vco = DIV_ROUND_CLOSEST(
 						BASE_FREQUENCY * m, candn + 2);
 					u32 dot = DIV_ROUND_CLOSEST(vco, p);
-					u32 this_err = ABS(dot - target_frequency);
+					u32 this_err = MAX(dot, target_frequency) -
+						MIN(dot, target_frequency);
 					if (this_err < err_most) {
 						err_most = this_err;
 						pixel_n = candn;