diff --git a/libraries/ReadMe.md b/libraries/ReadMe.md
index 8d8151e365f..15c636548cb 100644
--- a/libraries/ReadMe.md
+++ b/libraries/ReadMe.md
@@ -9,3 +9,7 @@ This area of the project uses Maven for its build. To build install a recent [Ma
 For more details see the [Getting Started Guide](http://confluence.jetbrains.net/display/Kotlin/Getting+Started)
 
 Be sure to build Kotlin compiler before lauching Maven: see ReadMe.md at root level, section "Building"
+
+If your maven build is failing with Out-Of-Memory errors, set JVM options for maven in MAVEN_OPTS environment variable like this:
+
+    MAVEN_OPTS="-Xms512m -Xmx1024m -XX:PermSize=256m -XX:MaxPermSize=512m"