diff --git a/cmhw/org/cyanogenmod/hardware/DisplayColorCalibration.java b/cmhw/org/cyanogenmod/hardware/DisplayColorCalibration.java
index bbd22e95..1407c382 100644
--- a/cmhw/org/cyanogenmod/hardware/DisplayColorCalibration.java
+++ b/cmhw/org/cyanogenmod/hardware/DisplayColorCalibration.java
@@ -77,6 +77,9 @@ public static boolean setColors(String colors) {
             long colorValue = Long.parseLong(parts[i], 10);
             colorValue <<= 24;
             --colorValue;
+            if (colorValue < 0) {
+                colorValue = 0;
+            }
             if (!FileUtils.writeLine(FILE_PATH[i], Long.toString(colorValue))) {
                 return false;
             }