diff --git a/src/ca/access.cpp b/src/ca/access.cpp
index f9b1752ce..dae79addd 100644
--- a/src/ca/access.cpp
+++ b/src/ca/access.cpp
@@ -26,6 +26,7 @@
 #include "iocinf.h"
 #include "oldAccess.h"
 #include "cac_IL.h"
+#include "baseNMIU_IL.h"
 
 epicsThreadPrivateId caClientContextId;
 
diff --git a/src/ca/netiiu.cpp b/src/ca/netiiu.cpp
index 163a44ce4..2b18fea9b 100644
--- a/src/ca/netiiu.cpp
+++ b/src/ca/netiiu.cpp
@@ -15,6 +15,7 @@
 #include "iocinf.h"
 #include "netiiu_IL.h"
 #include "nciu_IL.h"
+#include "baseNMIU_IL.h"
 
 netiiu::netiiu ( cac *pClientCtxIn ) : pClientCtx ( pClientCtxIn )
 {