diff --git a/com.oracle.truffle.r.native/fficall/src/truffle_common/Rinternals_truffle_common.h b/com.oracle.truffle.r.native/fficall/src/truffle_common/Rinternals_truffle_common.h
index 6cfe0a3c216e6495a0d9fdc8d8b5499409a86016..0417a02db6f05d69306565bdb78bdc6950a41d51 100644
--- a/com.oracle.truffle.r.native/fficall/src/truffle_common/Rinternals_truffle_common.h
+++ b/com.oracle.truffle.r.native/fficall/src/truffle_common/Rinternals_truffle_common.h
@@ -1188,8 +1188,8 @@ SEXP SET_TYPEOF_FASTR(SEXP x, int v) {
 }
 
 void SET_NAMED(SEXP x, int v) {
-    TRACE0();
-    unimplemented("SET_NAMED");
+    TRACE(TARGpd, x, v);
+    ((call_SET_NAMED) callbacks[SET_NAMED_FASTR_x])(x, v);
 }
 
 void SET_ATTRIB(SEXP x, SEXP v) {