diff --git a/com.oracle.truffle.r.runtime.ffi/src/com/oracle/truffle/r/runtime/ffi/jnr/CallRFFIHelper.java b/com.oracle.truffle.r.runtime.ffi/src/com/oracle/truffle/r/runtime/ffi/jnr/CallRFFIHelper.java
index 25e8940768bcc5137d581ed883f83148de9380e8..60a68d6a8bdebba0bbe1a7081168c965a3ee9ac4 100644
--- a/com.oracle.truffle.r.runtime.ffi/src/com/oracle/truffle/r/runtime/ffi/jnr/CallRFFIHelper.java
+++ b/com.oracle.truffle.r.runtime.ffi/src/com/oracle/truffle/r/runtime/ffi/jnr/CallRFFIHelper.java
@@ -1147,8 +1147,7 @@ public class CallRFFIHelper {
         return env.ls(all, null, sorted);
     }
 
-    @SuppressWarnings("unused")
-    private static String R_HomeDir() {
+    public static String R_HomeDir() {
         if (RFFIUtils.traceEnabled()) {
             RFFIUtils.traceUpCall("R_HomeDir");
         }