diff --git a/src/sp_lev.c b/src/sp_lev.c
index 4f52abdf2..bf0131b1f 100755
--- a/src/sp_lev.c
+++ b/src/sp_lev.c
@@ -94,6 +94,7 @@ static int FDECL(l_create_stairway, (lua_State *, BOOLEAN_P));
 static void FDECL(spo_endroom, (struct sp_coder *));
 static void FDECL(l_table_getset_feature_flag, (lua_State *, int, int, const char *, int));
 static void FDECL(sel_set_lit, (int, int, genericptr_t));
+static void FDECL(selection_iterate, (struct selectionvar *, select_iter_func, genericptr_t));
 static void FDECL(sel_set_ter, (int, int, genericptr_t));
 static void FDECL(sel_set_door, (int, int, genericptr_t));
 static void FDECL(sel_set_feature, (int, int, genericptr_t));
@@ -4808,7 +4809,7 @@ struct selectionvar *ov;
     selection_setpoint(x2, y2, ov, 1);
 }
 
-void
+static void
 selection_iterate(ov, func, arg)
 struct selectionvar *ov;
 select_iter_func func;