--- a/src/hotspot/share/prims/jvmtiTagMap.cpp	Wed Oct 03 03:41:57 2018 -0400
+++ b/src/hotspot/share/prims/jvmtiTagMap.cpp	Wed Oct 03 09:46:46 2018 -0400
@@ -853,7 +853,7 @@
     if (!fld.access_flags().is_static()) {
       continue;
     }
-    field_map->add(max_field_index - index, fld.signature()->byte_at(0), fld.offset());
+    field_map->add(max_field_index - index, fld.signature()->char_at(0), fld.offset());
   }
   return field_map;
 }
@@ -879,7 +879,7 @@
     if (fld.access_flags().is_static()) {
       continue;
     }
-    field_map->add(max_field_index - index, fld.signature()->byte_at(0), fld.offset());
+    field_map->add(max_field_index - index, fld.signature()->char_at(0), fld.offset());
   }
 
   return field_map;