diff --git a/src/ca/caDiagnostics.h b/src/ca/caDiagnostics.h
index 8efba8dfa..4956fd82d 100644
--- a/src/ca/caDiagnostics.h
+++ b/src/ca/caDiagnostics.h
@@ -1,4 +1,5 @@
 
+#include "cadef.h"
 
 #ifdef __cplusplus
 extern "C" {