diff --git a/public/java/src/org/broadinstitute/sting/utils/MathUtils.java b/public/java/src/org/broadinstitute/sting/utils/MathUtils.java
old mode 100755
new mode 100644
index 36ed506aa..cbe2948aa
--- a/public/java/src/org/broadinstitute/sting/utils/MathUtils.java
+++ b/public/java/src/org/broadinstitute/sting/utils/MathUtils.java
@@ -147,13 +147,13 @@ public class MathUtils {
         return Math.log10(sum) + maxValue;
     }
 
-    public static double sum(List<Double> values) {
+    public static double sumDoubles(List<Double> values) {
         double s = 0.0;
         for ( double v : values) s += v;
         return s;
     }
 
-    public static int sum(List<Integer> values) {
+    public static int sumIntegers(List<Integer> values) {
         int s = 0;
         for ( int v : values) s += v;
         return s;
@@ -428,7 +428,7 @@ public class MathUtils {
 
         // for precision purposes, we need to add (or really subtract, since they're
         // all negative) the largest value; also, we need to convert to normal-space.
-        double maxValue = MathUtils.arrayMax( array );
+        double maxValue = MathUtils.arrayMaxDouble( array );
         for (int i = 0; i < array.size(); i++)
             normalized[i] = Math.pow(10, array.get(i) - maxValue);
 
@@ -507,7 +507,7 @@ public class MathUtils {
         return minI;
     }    
 
-    public static int arrayMax(List<Integer> array) {
+    public static int arrayMaxInt(List<Integer> array) {
         if ( array == null ) throw new IllegalArgumentException("Array cannot be null!");
         if ( array.size() == 0 ) throw new IllegalArgumentException("Array size cannot be 0!");
 
@@ -516,7 +516,7 @@ public class MathUtils {
         return m;
     }
 
-    public static double arrayMax(List<Double> array) {
+    public static double arrayMaxDouble(List<Double> array) {
         if ( array == null ) throw new IllegalArgumentException("Array cannot be null!");
         if ( array.size() == 0 ) throw new IllegalArgumentException("Array size cannot be 0!");
 
@@ -1274,5 +1274,4 @@ public class MathUtils {
     public static double log10Factorial (int x) {
         return log10Gamma(x+1);
     }
-
-}
\ No newline at end of file
+}