diff --git a/src/libCom/calc/calcPerform.c b/src/libCom/calc/calcPerform.c
index 798ad3cec..90f41e261 100644
--- a/src/libCom/calc/calcPerform.c
+++ b/src/libCom/calc/calcPerform.c
@@ -18,10 +18,10 @@
 #include	<stdio.h>
 #include	<string.h>
 
+#define epicsExportSharedSymbols
 #include	"osiUnistd.h"
 #include	"dbDefs.h"
 #include	"epicsMath.h"
-#define epicsExportSharedSymbols
 #include	"postfix.h"
 #include	"postfixPvt.h"
 
diff --git a/src/libCom/calc/postfix.c b/src/libCom/calc/postfix.c
index c0b0b101d..fc6320930 100644
--- a/src/libCom/calc/postfix.c
+++ b/src/libCom/calc/postfix.c
@@ -19,11 +19,10 @@
 #include <string.h>
 #include <ctype.h>
 
+#define epicsExportSharedSymbols
 #include "dbDefs.h"
 #include "epicsStdlib.h"
 #include "epicsString.h"
-
-#define epicsExportSharedSymbols
 #include "postfix.h"
 #include "postfixPvt.h"
 #include "shareLib.h"