diff --git a/src/include/caerr.h b/src/include/caerr.h
index 27556ab9e..6e6312b78 100644
--- a/src/include/caerr.h
+++ b/src/include/caerr.h
@@ -166,7 +166,7 @@ HDRVERSIONID(caerrh, "@(#) $Id$")
 #ifndef CA_ERROR_GLBLSOURCE
 epicsShareExtern READONLY char	*ca_message_text[];
 #else
-READONLY char	*ca_message_text[]
+epicsShareDef READONLY char	*ca_message_text[]
 =
 {
 "Normal successful completion",