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Diffstat (limited to 'aircraft_gui.c')
-rw-r--r--aircraft_gui.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/aircraft_gui.c b/aircraft_gui.c
index 33f81cf9d..163718e1d 100644
--- a/aircraft_gui.c
+++ b/aircraft_gui.c
@@ -130,16 +130,14 @@ static void NewAircraftWndProc(Window *w, WindowEvent *e)
DoCommandP(w->window_number, sel_eng, 0, CcBuildAircraft, CMD_BUILD_AIRCRAFT | CMD_MSG(STR_A008_CAN_T_BUILD_AIRCRAFT));
} break;
- case 6: /* rename */
- WP(w,buildtrain_d).rename_engine = WP(w,buildtrain_d).sel_engine;
- ShowQueryString(
- GetCustomEngineName(WP(w,buildtrain_d).sel_engine),
- STR_A039_RENAME_AIRCRAFT_TYPE,
- 31,
- 160,
- w->window_class,
- w->window_number);
- break;
+ case 6: { /* rename */
+ int sel_eng = WP(w,buildtrain_d).sel_engine;
+ if (sel_eng != -1) {
+ WP(w,buildtrain_d).rename_engine = sel_eng;
+ ShowQueryString(GetCustomEngineName(sel_eng),
+ STR_A039_RENAME_AIRCRAFT_TYPE, 31, 160, w->window_class, w->window_number);
+ }
+ } break;
}
break;