diff --git a/include/prototypes.h b/include/prototypes.h
index ddb6ce39..f9f869c0 100644
--- a/include/prototypes.h
+++ b/include/prototypes.h
@@ -556,6 +556,7 @@ extern int put_plane_on_ship(struct plnstr *, struct shpstr *);
 extern void pln_dropoff(struct emp_qelem *, struct ichrstr *,
 			coord, coord, void *, int);
 extern void pln_mine(struct emp_qelem *list, struct sctstr *sectp);
+extern int pln_wanted(struct plnstr *, int, int);
 extern void pln_sel(struct nstr_item *, struct emp_qelem *,
 		    struct sctstr *, int, int, int, int);
 extern int pln_arm(struct emp_qelem *, int, char, struct ichrstr *,
diff --git a/src/lib/subs/mission.c b/src/lib/subs/mission.c
index 018b03f5..44fc6b10 100644
--- a/src/lib/subs/mission.c
+++ b/src/lib/subs/mission.c
@@ -902,67 +902,6 @@ oprange(struct empobj *gp, int *radius)
     return range;
 }
 
-static int
-mission_pln_wanted(struct plnstr *pp, int wantflags, int nowantflags)
-{
-    int y, bad, bad1;
-    unsigned x;
-    struct plchrstr *pcp = plchr + pp->pln_type;
-
-    bad = 0;
-    bad1 = 0;
-    if (wantflags) {
-	for (x = 0; x < sizeof(wantflags) * 8; x++) {
-	    y = (1 << x);
-	    if ((wantflags & y) == y)
-		if ((pcp->pl_flags & y) != y) {
-		    switch (y) {
-		    case P_F:
-		    case P_ESC:
-			bad1 = 2;
-			break;
-		    case P_E:
-		    case P_L:
-		    case P_K:
-			bad1 = 1;
-			break;
-		    default:
-			bad = 1;
-		    }
-		}
-	}
-	if (bad) {
-	    return 0;
-	}
-	if (bad1 == 2) {
-	    if ((pcp->pl_flags & P_ESC) || (pcp->pl_flags & P_F))
-		bad1 = 0;
-	}
-	if (bad1 == 1) {
-	    if ((pcp->pl_flags & P_E) ||
-		(pcp->pl_flags & P_K) || (pcp->pl_flags & P_L))
-		bad1 = 0;
-	}
-	if (bad1) {
-	    return 0;
-	}
-    }
-    bad = 0;
-    bad1 = 0;
-    if (nowantflags) {
-	for (x = 0; x < sizeof(nowantflags) * 8; x++) {
-	    y = (1 << x);
-	    if ((nowantflags & y) == y)
-		if ((pcp->pl_flags & y) == y)
-		    bad = 1;
-	}
-	if (bad) {
-	    return 0;
-	}
-    }
-    return 1;
-}
-
 /*
  *  Remove all planes who cannot go on
  *  the mission from the plane list.
@@ -1007,7 +946,7 @@ mission_pln_sel(struct emp_qelem *list, int wantflags, int nowantflags,
 	    }
 	}
 
-	if (!mission_pln_wanted(pp, wantflags, nowantflags)) {
+	if (!pln_wanted(pp, wantflags, nowantflags)) {
 	    emp_remque(qp);
 	    free(qp);
 	    continue;
diff --git a/src/lib/subs/plnsub.c b/src/lib/subs/plnsub.c
index e358708b..50a2092a 100644
--- a/src/lib/subs/plnsub.c
+++ b/src/lib/subs/plnsub.c
@@ -359,7 +359,7 @@ pln_mine(struct emp_qelem *list, struct sctstr *sectp)
  * - it lacks any of the other flags in wantflags, or
  * - it has any of the flags in nowantflags.
  */
-static int
+int
 pln_wanted(struct plnstr *pp, int wantflags, int nowantflags)
 {
     int flags = plchr[(int)pp->pln_type].pl_flags;