diff --git a/runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc b/runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc
index 4f5bf18..1a227cf 100644
--- a/runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc
+++ b/runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc
@@ -2817,7 +2817,10 @@
 
   // read flags.
   const uint8_t flags = ReadFlags();
-  const bool is_invariant = (flags & kInstanceInvocationFlagInvariant) != 0;
+  bool is_invariant = false;
+  if (!is_dynamic) {
+    is_invariant = (flags & kInstanceInvocationFlagInvariant) != 0;
+  }
 
   const TokenPosition position = ReadPosition();  // read position.
   if (p != nullptr) *p = position;