diff --git a/src/libCom/osi/os/default/compilerDefs.h b/src/libCom/osi/os/default/compilerDefs.h
deleted file mode 100644
index 7e9783082..000000000
--- a/src/libCom/osi/os/default/compilerDefs.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*************************************************************************\
-* Copyright (c) 2003 The University of Chicago, as Operator of Argonne
-*     National Laboratory.
-* EPICS BASE Versions 3.13.7
-* and higher are distributed subject to a Software License Agreement found
-* in file LICENSE that is included with this distribution. 
-\*************************************************************************/
-#ifndef _EPICS_COMPILERDEFS_H
-#define _EPICS_COMPILERDEFS_H
-
-/*
- * Compiler-specific definitions
- */
-
-#ifdef __GNUC__
-# define EPICS_PRINTF_STYLE(f,a) __attribute__((format(printf,f,a)))
-#else
-# define EPICS_PRINTF_STYLE(f,a)
-#endif
-
-#endif /* _EPICS_COMPILERDEFS_H */