1 files changed, 5 insertions, 3 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompilationArgsProvider.java b/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompilationArgsProvider.java
index d93f4dba1e..34b0ddb17c 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompilationArgsProvider.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompilationArgsProvider.java
@@ -15,13 +15,14 @@
 package com.google.devtools.build.lib.rules.java;
 
 import com.google.auto.value.AutoValue;
+import com.google.common.collect.Iterables;
 import com.google.devtools.build.lib.actions.Artifact;
 import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
 import com.google.devtools.build.lib.collect.nestedset.NestedSet;
 import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
 import com.google.devtools.build.lib.collect.nestedset.Order;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
-import java.util.List;
+import java.util.Collection;
 
 /**
  * An interface for objects that provide information on how to include them in
@@ -87,9 +88,10 @@ public abstract class JavaCompilationArgsProvider implements TransitiveInfoProvi
    */
   public abstract NestedSet<Artifact> getRunTimeJavaDependencyArtifacts();
 
-  public static JavaCompilationArgsProvider merge(List<JavaCompilationArgsProvider> providers) {
+  public static JavaCompilationArgsProvider merge(
+      Collection<JavaCompilationArgsProvider> providers) {
     if (providers.size() == 1) {
-      return providers.get(0);
+      return Iterables.get(providers, 0);
     }
 
     JavaCompilationArgs.Builder javaCompilationArgs = JavaCompilationArgs.builder();