diff --git a/hotspot/src/share/vm/oops/methodData.hpp b/hotspot/src/share/vm/oops/methodData.hpp
index a85b64e8801..627fba527e2 100644
--- a/hotspot/src/share/vm/oops/methodData.hpp
+++ b/hotspot/src/share/vm/oops/methodData.hpp
@@ -2183,7 +2183,7 @@ private:
   uint _nof_overflow_traps;         // trap count, excluding _trap_hist
   union {
     intptr_t _align;
-    u1 _array[_trap_hist_limit];
+    u1 _array[JVMCI_ONLY(2 *) _trap_hist_limit];
   } _trap_hist;
 
   // Support for interprocedural escape analysis, from Thomas Kotzmann.