--- a/src/filter.c	2020-05-23 13:50:19.064756474 +0200
+++ b/src/filter.c	2020-05-23 13:53:01.936647646 +0200
@@ -68,7 +68,7 @@
 extern EPS_UINT8*   tmpLineBuf;
 
 extern EPS_CMN_FUNC epsCmnFnc;
-EPS_JOB_FUNCS		jobFnc;
+extern EPS_JOB_FUNCS	jobFnc;
 
 extern EPS_INT32 tonerSave;
 extern EPS_INT32 back_type;