diff --git a/core/src/main/java/org/jruby/internal/runtime/GlobalVariable.java b/core/src/main/java/org/jruby/internal/runtime/GlobalVariable.java
index 8f419caaae7..a798e8552e9 100644
--- a/core/src/main/java/org/jruby/internal/runtime/GlobalVariable.java
+++ b/core/src/main/java/org/jruby/internal/runtime/GlobalVariable.java
@@ -97,6 +97,7 @@ public void removeTraces() {
 
     public void setAccessor(IAccessor accessor) {
         this.accessor = accessor;
+        this.invalidator.invalidate();
     }
     public boolean isTracing() {
         return tracing;