diff --git a/modules/src/em_code/io.c b/modules/src/em_code/io.c
index 91b975b58..ba672786e 100644
--- a/modules/src/em_code/io.c
+++ b/modules/src/em_code/io.c
@@ -17,7 +17,9 @@ Part
 long
 	C_current_out;
 
+#ifdef INCORE
 static char	*BASE;
+#endif
 static File	*ofp;
 
 #ifndef INCORE