diff --git a/filter/filter.h b/filter/filter.h
index 982276f0..bc330aba 100644
--- a/filter/filter.h
+++ b/filter/filter.h
@@ -75,7 +75,7 @@
 
 enum f_instruction_code {
 #define F(c,a,b) \
-  c = FI__TWOCHAR(a,b),
+  c,
 FI__LIST
 #undef F
 } PACKED;