diff --git a/src/iocsh/systemCommandRegister.c b/src/iocsh/systemCommandRegister.c
index c7016ed77..f9221a6cd 100644
--- a/src/iocsh/systemCommandRegister.c
+++ b/src/iocsh/systemCommandRegister.c
@@ -17,8 +17,6 @@
 #include <stdlib.h>
 #include <errlog.h>
 #include <epicsExport.h>
-
-#define epicsExportSharedSymbols
 #include <iocsh.h>
 
 /* system */