diff --git a/modules/core/src/main/java/org/dhallj/core/typechecking/Context.java b/modules/core/src/main/java/org/dhallj/core/typechecking/Context.java
index 37e015ec..f022970b 100644
--- a/modules/core/src/main/java/org/dhallj/core/typechecking/Context.java
+++ b/modules/core/src/main/java/org/dhallj/core/typechecking/Context.java
@@ -2,7 +2,7 @@
 
 import org.dhallj.core.Expr;
 
-public final class Context {
+final class Context {
   private final String key;
   private final Expr value;
   private final Context tail;