diff --git a/src/libCom/misc/epicsExport.h b/src/libCom/misc/epicsExport.h
index 10df5f179..dea8dd67a 100644
--- a/src/libCom/misc/epicsExport.h
+++ b/src/libCom/misc/epicsExport.h
@@ -26,7 +26,7 @@ typedef void (*REGISTRAR)(void);
 
 #define epicsExportAddress(typ,obj) \
 epicsShareExtern typ *EPICS_EXPORT_POBJ(typ,obj); \
-epicsShareDef typ *EPICS_EXPORT_POBJ(typ,obj) = (typ *)&obj
+epicsShareDef typ *EPICS_EXPORT_POBJ(typ,obj) = (typ *)(char *)&obj
 
 #define epicsExportRegistrar(func) \
 epicsShareFunc REGISTRAR EPICS_EXPORT_PFUNC(func) = (REGISTRAR)(void*)&func