diff --git a/src/libCom/timer/timer.cpp b/src/libCom/timer/timer.cpp
index e9913342d..5b948fc4f 100644
--- a/src/libCom/timer/timer.cpp
+++ b/src/libCom/timer/timer.cpp
@@ -29,6 +29,8 @@
  *
  */
 
+#include <typeinfo>
+
 #define epicsExportSharedSymbols
 #include "epicsGuard.h"
 #include "timerPrivate.h"