diff --git a/build.xml b/build.xml
index 797ceab4479..7d531393408 100644
--- a/build.xml
+++ b/build.xml
@@ -1130,6 +1130,7 @@
         <delete dir="${output}/mock-runtime-src" failonerror="false"/>
         <mkdir dir="${output}/mock-runtime-src"/>
         <copy file="${basedir}/libraries/stdlib/src/kotlin/util/Standard.kt" todir="${output}/mock-runtime-src"/>
+        <copy file="${basedir}/libraries/stdlib/src/kotlin/internal/Annotations.kt" todir="${output}/mock-runtime-src"/>
 
         <new-kotlinc output="${output}/classes/mock-runtime" moduleName="kotlin-stdlib">
             <src>