diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/function/PromiseHelperNode.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/function/PromiseHelperNode.java
index 1019494ed4976ec12d322611581121196262f50a..018515b742e3bcddefa873886878fa119959c481 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/function/PromiseHelperNode.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/function/PromiseHelperNode.java
@@ -28,9 +28,6 @@ import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.frame.Frame;
-import com.oracle.truffle.api.frame.FrameSlot;
-import com.oracle.truffle.api.frame.FrameSlotKind;
-import com.oracle.truffle.api.frame.FrameSlotTypeException;
 import com.oracle.truffle.api.frame.MaterializedFrame;
 import com.oracle.truffle.api.frame.VirtualFrame;
 import com.oracle.truffle.api.nodes.ExplodeLoop;
@@ -45,13 +42,11 @@ import com.oracle.truffle.r.runtime.FastROptions;
 import com.oracle.truffle.r.runtime.RArguments;
 import com.oracle.truffle.r.runtime.RCaller;
 import com.oracle.truffle.r.runtime.RError;
-import com.oracle.truffle.r.runtime.RInternalError;
 import com.oracle.truffle.r.runtime.VirtualEvalFrame;
 import com.oracle.truffle.r.runtime.data.RPromise;
 import com.oracle.truffle.r.runtime.data.RPromise.EagerPromise;
 import com.oracle.truffle.r.runtime.data.RPromise.PromiseState;
 import com.oracle.truffle.r.runtime.data.RShareable;
-import com.oracle.truffle.r.runtime.env.frame.FrameSlotChangeMonitor;
 import com.oracle.truffle.r.runtime.nodes.RBaseNode;
 
 /**
@@ -88,7 +83,8 @@ public final class PromiseHelperNode extends RBaseNode {
          * Guarantees, that all {@link RPromise}s in frame are deoptimized and thus are safe to
          * leave it's stack-branch.
          *
-         * @param arguments The frame's arguments, which will be checked for {@link RPromise}s to deoptimize
+         * @param arguments The frame's arguments, which will be checked for {@link RPromise}s to
+         *            deoptimize
          * @return Whether there was at least on {@link RPromise} which needed to be deoptimized.
          */
         public boolean deoptimizeFrame(Object[] arguments) {