--- claws-mail-3.15.1/./src/compose.c~	2017-08-28 19:49:41.000000000 +0200
+++ claws-mail-3.15.1/./src/compose.c	2017-10-26 09:20:35.883514684 +0200
@@ -8794,7 +8794,7 @@ static void compose_template_apply_field
 	tr = g_strdup(C_("'%s' stands for a header name",
 				  "Template '%s' format error."));
 	text = g_strdup_printf(tr, prefs_common_translated_header_name(header));
-	alertpanel_error(text);
+	alertpanel_error("%s", text);
 
 	g_free(text);
 	g_free(tr);
--- claws-mail-3.15.1/./src/mimeview.c~	2017-08-28 19:48:24.000000000 +0200
+++ claws-mail-3.15.1/./src/mimeview.c	2017-10-26 09:23:22.174780948 +0200
@@ -1879,7 +1879,7 @@ static void mimeview_save_all_info(gint
 					"%d files saved successfully.",
 					total),
 				total);
-		alertpanel_notice(msg);
+		alertpanel_notice("%s", msg);
 		g_free(msg);
 	} else {
 		gchar *msg1 = g_strdup_printf(
@@ -1892,7 +1892,7 @@ static void mimeview_save_all_info(gint
 					"%s, %d files failed.",
 					errors),
 				msg1, errors);
-		alertpanel_warning(msg2);
+		alertpanel_warning("%s", msg2);
 		g_free(msg2);
 		g_free(msg1);
 	}
--- claws-mail-3.15.1/src/plugins/archive/archiver_gtk.c~	2017-08-28 19:48:24.000000000 +0200
+++ claws-mail-3.15.1/src/plugins/archive/archiver_gtk.c	2017-10-26 09:26:51.703909833 +0200
@@ -576,7 +576,7 @@ static gboolean archiver_save_files(stru
 			if (aval != G_ALERTALTERNATE)
 				return FALSE;
 		} else {
-			alertpanel_error(msg);
+			alertpanel_error("%s", msg);
 			g_free(msg);
 			return FALSE;
 		}