--- a/truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/runtime/SLContext.java	Wed Dec 16 16:38:13 2015 +0100
+++ b/truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/runtime/SLContext.java	Wed Dec 16 15:32:23 2015 -0800
@@ -41,6 +41,7 @@
 package com.oracle.truffle.sl.runtime;
 
 import com.oracle.truffle.api.CallTarget;
+import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.ExecutionContext;
 import com.oracle.truffle.api.TruffleLanguage;
 import com.oracle.truffle.api.dsl.NodeFactory;
@@ -258,6 +259,7 @@
      * @param name the name of the symbol to search for
      * @return object representing the symbol or <code>null</code>
      */
+    @TruffleBoundary
     public Object importSymbol(String name) {
         Object object = env.importSymbol(name);
         Object slValue = fromForeignValue(object);