diff --git a/src/main/java/com/ibm/minerva/analyzer/Analyzer.java b/src/main/java/com/ibm/minerva/analyzer/Analyzer.java
index b25d5e5..d480a02 100644
--- a/src/main/java/com/ibm/minerva/analyzer/Analyzer.java
+++ b/src/main/java/com/ibm/minerva/analyzer/Analyzer.java
@@ -126,6 +126,10 @@ public static void setLoggingLevel(Level level) {
         LoggingUtil.setLoggingLevel(level);
     }
 
+    // [0] : archive path(s)
+    // [1] : output directory
+    // [2] : package exclusion list
+    // [3] : build call graph (true|false|<algorithm-name>)
     public static void main(String[] args) {
         if (args.length > 1) {
             final Analyzer analyzer;
@@ -162,7 +166,7 @@ public static void main(String[] args) {
                     }
                     else {
                         // Try to match the name of one of the CallGraphBuilderType enum values.
-                        Optional<CallGraphBuilderType> o = Arrays.stream(CallGraphBuilderType.values()).filter(x -> args[3].equalsIgnoreCase(x.name())).findFirst();
+                        Optional<CallGraphBuilderType> o = CallGraphBuilderType.find(args[3]);
                         if (o.isPresent()) {
                             analyzer.setCallGraphBuilder(o.get());
                         }
diff --git a/src/main/java/com/ibm/minerva/analyzer/CallGraphBuilderType.java b/src/main/java/com/ibm/minerva/analyzer/CallGraphBuilderType.java
index bacd414..bc475f9 100644
--- a/src/main/java/com/ibm/minerva/analyzer/CallGraphBuilderType.java
+++ b/src/main/java/com/ibm/minerva/analyzer/CallGraphBuilderType.java
@@ -18,6 +18,9 @@
 
 package com.ibm.minerva.analyzer;
 
+import java.util.Arrays;
+import java.util.Optional;
+
 import com.ibm.wala.cast.java.client.impl.ZeroCFABuilderFactory;
 import com.ibm.wala.cast.java.client.impl.ZeroOneCFABuilderFactory;
 import com.ibm.wala.ipa.callgraph.AnalysisOptions;
@@ -50,4 +53,8 @@ com.ibm.wala.ipa.callgraph.CallGraphBuilder<?> createCallGraphBuilder(AnalysisOp
             IClassHierarchy cha) {
         return factory.createCallGraphBuilder(options, cache, cha);
     }
+    
+    public static Optional<CallGraphBuilderType> find(String name) {
+        return Arrays.stream(values()).filter(x -> x.name().equalsIgnoreCase(name)).findFirst();
+    }
 }