--- a/libop/op_events.c
+++ b/libop/op_events.c
@@ -1201,6 +1201,7 @@
  		case CPU_CORE_I7:
 		case CPU_NEHALEM:
 		case CPU_HASWELL:
+		case CPU_SILVERMONT:
 		case CPU_WESTMERE:
 		case CPU_SANDYBRIDGE:
 		case CPU_IVYBRIDGE: