diff --git a/src/core/wee-upgrade-file.c b/src/core/wee-upgrade-file.c
index 2048fbfbe..08088f223 100644
--- a/src/core/wee-upgrade-file.c
+++ b/src/core/wee-upgrade-file.c
@@ -780,5 +780,6 @@ upgrade_file_read (struct t_upgrade_file *upgrade_file,
 void
 upgrade_file_close (struct t_upgrade_file *upgrade_file)
 {
-    fclose (upgrade_file->file);
+    if (upgrade_file && upgrade_file->file)
+        fclose (upgrade_file->file);
 }
diff --git a/src/core/wee-upgrade.c b/src/core/wee-upgrade.c
index 01fc52ab3..b9d9c0e72 100644
--- a/src/core/wee-upgrade.c
+++ b/src/core/wee-upgrade.c
@@ -775,6 +775,8 @@ upgrade_weechat_load ()
     upgrade_layout = gui_layout_alloc (GUI_LAYOUT_UPGRADE);
 
     upgrade_file = upgrade_file_new (WEECHAT_UPGRADE_FILENAME, 0);
+    if (!upgrade_file)
+        return 0;
     rc = upgrade_file_read (upgrade_file, &upgrade_weechat_read_cb, NULL);
     upgrade_file_close (upgrade_file);
 
diff --git a/src/plugins/irc/irc-upgrade.c b/src/plugins/irc/irc-upgrade.c
index 9f3b62e25..927dd151c 100644
--- a/src/plugins/irc/irc-upgrade.c
+++ b/src/plugins/irc/irc-upgrade.c
@@ -720,6 +720,8 @@ irc_upgrade_load ()
     irc_upgrade_set_buffer_callbacks ();
 
     upgrade_file = weechat_upgrade_new (IRC_UPGRADE_FILENAME, 0);
+    if (!upgrade_file)
+        return 0;
     rc = weechat_upgrade_read (upgrade_file, &irc_upgrade_read_cb, NULL);
     weechat_upgrade_close (upgrade_file);
 
diff --git a/src/plugins/relay/relay-upgrade.c b/src/plugins/relay/relay-upgrade.c
index b6a94f511..f82854d07 100644
--- a/src/plugins/relay/relay-upgrade.c
+++ b/src/plugins/relay/relay-upgrade.c
@@ -240,6 +240,8 @@ relay_upgrade_load ()
     relay_upgrade_set_buffer_callbacks ();
 
     upgrade_file = weechat_upgrade_new (RELAY_UPGRADE_FILENAME, 0);
+    if (!upgrade_file)
+        return 0;
     rc = weechat_upgrade_read (upgrade_file, &relay_upgrade_read_cb, NULL);
     weechat_upgrade_close (upgrade_file);
 
diff --git a/src/plugins/xfer/xfer-upgrade.c b/src/plugins/xfer/xfer-upgrade.c
index 9e9c1f26d..8e9fed097 100644
--- a/src/plugins/xfer/xfer-upgrade.c
+++ b/src/plugins/xfer/xfer-upgrade.c
@@ -137,6 +137,8 @@ xfer_upgrade_load ()
     xfer_upgrade_set_buffer_callbacks ();
 
     upgrade_file = weechat_upgrade_new (XFER_UPGRADE_FILENAME, 0);
+    if (!upgrade_file)
+        return 0;
     rc = weechat_upgrade_read (upgrade_file, &xfer_upgrade_read_cb, NULL);
     weechat_upgrade_close (upgrade_file);