diff --git a/src/libCom/misc/cantProceed.h b/src/libCom/misc/cantProceed.h
index 9f4dc1cd8..437f96802 100644
--- a/src/libCom/misc/cantProceed.h
+++ b/src/libCom/misc/cantProceed.h
@@ -1,10 +1,9 @@
 /*************************************************************************\
-* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+* Copyright (c) 2011 UChicago Argonne LLC, as Operator of Argonne
 *     National Laboratory.
 * Copyright (c) 2002 The Regents of the University of California, as
 *     Operator of Los Alamos National Laboratory.
-* EPICS BASE Versions 3.13.7
-* and higher are distributed subject to a Software License Agreement found
+* EPICS BASE is distributed subject to a Software License Agreement found
 * in file LICENSE that is included with this distribution. 
 \*************************************************************************/
 #ifndef INCcantProceedh
@@ -12,13 +11,14 @@
 
 #include <stdlib.h>
 
+#include "compilerDependencies.h"
 #include "shareLib.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-epicsShareFunc void cantProceed(const char *errorMessage, ...);
+epicsShareFunc void cantProceed(const char *errorMessage, ...) EPICS_PRINTF_STYLE(1,2);
 epicsShareFunc void * callocMustSucceed(size_t count, size_t size, const char *errorMessage);
 epicsShareFunc void * mallocMustSucceed(size_t size, const char *errorMessage);