diff --git a/configure.py b/configure.py
index fb8a7591e..dcf6dc474 100755
--- a/configure.py
+++ b/configure.py
@@ -400,7 +400,7 @@ config.libs = [
             Object(MatchingFor("GZLJ01", "GZLE01", "GZLP01"),    "f_ap/f_ap_game.cpp"),
 
             # f_op
-            Object(Matching,    "f_op/f_op_actor.cpp", extra_cflags=["-sym off"]),
+            Object(Matching,    "f_op/f_op_actor.cpp"),
             Object(Matching,    "f_op/f_op_actor_iter.cpp"),
             Object(Matching,    "f_op/f_op_actor_tag.cpp"),
             Object(MatchingFor("GZLJ01", "GZLE01", "GZLP01"),    "f_op/f_op_actor_mng.cpp"),
diff --git a/src/f_op/f_op_actor.cpp b/src/f_op/f_op_actor.cpp
index 45a12ec2e..30f4c1d40 100644
--- a/src/f_op/f_op_actor.cpp
+++ b/src/f_op/f_op_actor.cpp
@@ -3,6 +3,7 @@
 // Translation Unit: f_op_actor.cpp
 //
 
+#include "d/dolzel.h" // IWYU pragma: keep
 #include "f_op/f_op_actor.h"
 #include "f_op/f_op_actor_mng.h"
 #include "f_op/f_op_actor_tag.h"