diff --git a/src/libCom/osi/osiTime.h b/src/libCom/osi/osiTime.h
index 833cd962e..fc5137197 100644
--- a/src/libCom/osi/osiTime.h
+++ b/src/libCom/osi/osiTime.h
@@ -133,6 +133,7 @@ public:
 	//
 	osiTime ();
 	osiTime (const osiTime &t);
+    osiTime & operator = (const osiTime &rhs);
 
 	//
 	// convert to and from EPICS TS_STAMP format
@@ -287,6 +288,13 @@ inline osiTime::osiTime () : secPastEpoch(0u), nSec(0u) {}
 
 inline osiTime::osiTime (const osiTime &t) : secPastEpoch (t.secPastEpoch), nSec (t.nSec) {}
 
+inline osiTime & osiTime::operator = ( const osiTime &t )
+{
+    this->secPastEpoch = t.secPastEpoch;
+    this->nSec = t.nSec;
+    return *this;
+}
+
 inline osiTime osiTime::operator - (const double &rhs) const
 {
 	return osiTime::operator + (-rhs);