diff --git a/interface/src/main/java/xsbti/compile/GlobalsCache.java b/interface/src/main/java/xsbti/compile/GlobalsCache.java
index a3a412836..d9aa1c017 100644
--- a/interface/src/main/java/xsbti/compile/GlobalsCache.java
+++ b/interface/src/main/java/xsbti/compile/GlobalsCache.java
@@ -3,6 +3,9 @@ package xsbti.compile;
 import xsbti.Logger;
 import xsbti.Reporter;
 
+/**
+ * An interface which lets us know how to retrieve cached compiler instances form the current JVM.
+ */
 public interface GlobalsCache
 {
 	public CachedCompiler apply(String[] args, Output output, boolean forceNew, CachedCompilerProvider provider, Logger log, Reporter reporter);