diff --git a/src/tactic/portfolio/fd_solver.cpp b/src/tactic/portfolio/fd_solver.cpp
index 12842daac..c56c0359e 100644
--- a/src/tactic/portfolio/fd_solver.cpp
+++ b/src/tactic/portfolio/fd_solver.cpp
@@ -18,7 +18,6 @@ Notes:
 --*/
 
 #include "fd_solver.h"
-#include "fd_tactic.h"
 #include "tactic.h"
 #include "inc_sat_solver.h"
 #include "enum2bv_solver.h"
diff --git a/src/tactic/portfolio/fd_solver.h b/src/tactic/portfolio/fd_solver.h
index 41605c460..a52245e0d 100644
--- a/src/tactic/portfolio/fd_solver.h
+++ b/src/tactic/portfolio/fd_solver.h
@@ -23,8 +23,13 @@ Notes:
 #include"params.h"
 
 class solver;
+class tactic;
 
 solver * mk_fd_solver(ast_manager & m, params_ref const & p);
+tactic * mk_fd_tactic(ast_manager & m, params_ref const & p);
 
+/*
+  ADD_TACTIC("qffd",  "builtin strategy for solving QF_FD problems.", "mk_fd_tactic(m, p)")
+*/
 
 #endif
diff --git a/src/tactic/portfolio/smt_strategic_solver.cpp b/src/tactic/portfolio/smt_strategic_solver.cpp
index 15d2e02c2..188174eca 100644
--- a/src/tactic/portfolio/smt_strategic_solver.cpp
+++ b/src/tactic/portfolio/smt_strategic_solver.cpp
@@ -38,7 +38,6 @@ Notes:
 #include"smt_solver.h"
 #include"inc_sat_solver.h"
 #include"fd_solver.h"
-#include"fd_tactic.h"
 #include"bv_rewriter.h"
 #include"solver2tactic.h"