diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/MutableDataFlowInfoForArguments.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/MutableDataFlowInfoForArguments.java
index 9f89dbcf905..273eb529af2 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/MutableDataFlowInfoForArguments.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/MutableDataFlowInfoForArguments.java
@@ -35,9 +35,7 @@ public interface MutableDataFlowInfoForArguments extends DataFlowInfoForArgument
         }
 
         @Override
-        public void updateInfo(
-                @NotNull ValueArgument valueArgument, @NotNull DataFlowInfo dataFlowInfo
-        ) {
+        public void updateInfo(@NotNull ValueArgument valueArgument, @NotNull DataFlowInfo dataFlowInfo) {
             throw new IllegalStateException();
         }
 
diff --git a/core/descriptors/src/org/jetbrains/jet/lang/descriptors/impl/CompositePackageFragmentProvider.kt b/core/descriptors/src/org/jetbrains/jet/lang/descriptors/impl/CompositePackageFragmentProvider.kt
index 760d2874ee7..cd9c52a5fa3 100644
--- a/core/descriptors/src/org/jetbrains/jet/lang/descriptors/impl/CompositePackageFragmentProvider.kt
+++ b/core/descriptors/src/org/jetbrains/jet/lang/descriptors/impl/CompositePackageFragmentProvider.kt
@@ -22,6 +22,7 @@ import org.jetbrains.jet.lang.resolve.name.FqName
 
 import java.util.*
 import org.jetbrains.jet.lang.resolve.name.Name
+import org.jetbrains.jet.utils.toReadOnlyList
 
 public class CompositePackageFragmentProvider(// can be modified from outside
         private val providers: List<PackageFragmentProvider>) : PackageFragmentProvider {
@@ -31,8 +32,7 @@ public class CompositePackageFragmentProvider(// can be modified from outside
         for (provider in providers) {
             result.addAll(provider.getPackageFragments(fqName))
         }
-        result.trimToSize()
-        return result
+        return result.toReadOnlyList()
     }
 
     override fun getSubPackagesOf(fqName: FqName, nameFilter: (Name) -> Boolean): Collection<FqName> {