1 files changed, 7 insertions, 1 deletions
diff --git a/src/main.c b/src/main.c
index d9fe3d3..5335a19 100644
--- a/src/main.c
+++ b/src/main.c
@@ -80,7 +80,13 @@ static gint main_method_window_response(GtkWidget *method_window, gint response,
 			ctx->finecentering = FALSE;
 		}
 		
-		ctx->cache_filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(ctx->cache_file_selector));
+		if ( ctx->psmode == PEAKSEARCH_CACHED ) {
+			ctx->cache_filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(ctx->cache_file_selector));
+			if ( !ctx->cache_filename ) {
+				fprintf(stderr, "Please specify a cache filename!\n");
+				gtk_exit(1);
+			}
+		}
 		
 		gtk_widget_destroy(method_window);
 		while ( gtk_events_pending() ) gtk_main_iteration();