diff --git a/src/common/kernel/build.c b/src/common/kernel/build.c
index f6cfe7532..eeea27323 100644
--- a/src/common/kernel/build.c
+++ b/src/common/kernel/build.c
@@ -657,8 +657,10 @@ build(unit * u, const construction * ctype, int completed, int want)
 			}
 		}
 
-		if (want>0)
+		if (want>0) {
 			n = min(want, n);
+		}
+
 		if (type->maxsize>0) {
 			n = min(type->maxsize-completed, n);
 			if (type->improvement==NULL) {
diff --git a/src/common/kernel/save.c b/src/common/kernel/save.c
index 8abe6ca20..1210c9a75 100644
--- a/src/common/kernel/save.c
+++ b/src/common/kernel/save.c
@@ -1294,12 +1294,20 @@ writegame(char *path, char quiet)
 	FILE * F;
 #ifdef USE_PLAYERS
 	char playerfile[MAX_PATH];
+#endif
 
+#ifdef USE_PLAYERS
 	sprintf(buf, "%s/%d.players", datapath(), turn);
 	export_players(playerfile);
 #endif
+
 	/* write_dynamictypes(); */
 
+	/* write turn number to file for use by external scripts */
+	F = fopen("turn","w");
+	fprintf(F, "%d", turn);
+	fclose(F);
+
 	F = cfopen(path, "w");
 	if (F==NULL)
 		return;