diff --git a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/fastr/FastRInterop.java b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/fastr/FastRInterop.java
index 4aeffb07daebe4fa61b5143ad425ca10cb824672..47c62cd5b0c0330432086dd70d1716ca6a5dad6b 100644
--- a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/fastr/FastRInterop.java
+++ b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/fastr/FastRInterop.java
@@ -452,7 +452,7 @@ public class FastRInterop {
         }
     }
 
-    @RBuiltin(name = ".fastr.java.addClasspathEntry", visibility = OFF, kind = PRIMITIVE, parameterNames = {"entry", "silent"}, behavior = COMPLEX)
+    @RBuiltin(name = "java.addClasspathEntry", visibility = OFF, kind = PRIMITIVE, parameterNames = {"entry", "silent"}, behavior = COMPLEX)
     public abstract static class JavaAddClasspathEntry extends RBuiltinNode.Arg2 {
 
         static {
diff --git a/documentation/tutorials/debugging/InteropDebugging/R/main.r b/documentation/tutorials/debugging/InteropDebugging/R/main.r
index ed13a09c88e2b692fc7bc1415cf885634d954eb1..bff4979782d79865eb19346a5948be20224ec229 100644
--- a/documentation/tutorials/debugging/InteropDebugging/R/main.r
+++ b/documentation/tutorials/debugging/InteropDebugging/R/main.r
@@ -29,7 +29,7 @@ obj <- .fastr.interop.new(clazz, .fastr.interop.toLong(as.integer(Sys.time())*10
 print(obj$toString())
 
 # add classpath entry to be able to use our class
-.fastr.java.addClasspathEntry("build/classes")
+java.addClasspathEntry("build/classes")
 clazz <- .fastr.java.class("com.oracle.truffle.r.JavaMessage")
 obj <- .fastr.interop.new(clazz, "Hi there")
 print(obj$getMessage())