diff --git a/src/ca/ca_client_context.cpp b/src/ca/ca_client_context.cpp
index 17d7e9475..efcac8f95 100644
--- a/src/ca/ca_client_context.cpp
+++ b/src/ca/ca_client_context.cpp
@@ -727,14 +727,18 @@ cacContext & ca_client_context::createNetworkContext (
     return * new cac ( mutexIn, cbMutexIn, *this );
 }
 
-void epicsShareAPI caInstallDefaultService ( cacService & service )
+void ca_client_context::installDefaultService ( cacService & service )
 {
     // this wont consistently work if called from file scope constructor
     epicsGuard < epicsMutex > guard ( ca_client_context::defaultServiceInstallMutex );
     if ( ca_client_context::pDefaultService ) {
-        throw std::logic_error ( "CA in-memory service already installed and can't be replaced");
+        throw std::logic_error
+            ( "CA in-memory service already installed and can't be replaced");
     }
     ca_client_context::pDefaultService = & service;
 }
 
-
+void epicsShareAPI caInstallDefaultService ( cacService & service )
+{
+    ca_client_context::installDefaultService ( service );
+}
diff --git a/src/ca/oldAccess.h b/src/ca/oldAccess.h
index e1207e7ef..12d249a3e 100644
--- a/src/ca/oldAccess.h
+++ b/src/ca/oldAccess.h
@@ -307,6 +307,7 @@ public:
     void blockForEventAndEnableCallbacks ( 
         epicsEvent & event, const double & timeout );
     CASG * lookupCASG ( epicsGuard < epicsMutex > &, unsigned id );
+    static void installDefaultService ( cacService & );
     void installCASG ( epicsGuard < epicsMutex > &, CASG & );
     void uninstallCASG ( epicsGuard < epicsMutex > &, CASG & );
     void selfTest () const;
@@ -389,7 +390,6 @@ private:
     friend int epicsShareAPI ca_sg_block ( const CA_SYNC_GID gid, ca_real timeout );
     friend int epicsShareAPI ca_sg_reset ( const CA_SYNC_GID gid );
     friend int epicsShareAPI ca_sg_test ( const CA_SYNC_GID gid );
-    friend void epicsShareAPI caInstallDefaultService ( cacService & );
     friend int epicsShareAPI ca_change_connection_event ( chid pChan, caCh *pfunc );
     friend int epicsShareAPI ca_replace_access_rights_event ( chid pChan, caArh *pfunc );
     friend void epicsShareAPI ca_get_host_name ( chid pChan, char *pBuf, unsigned bufLength );