diff --git a/mail/thunderbird/files/patch-bug2040125 b/mail/thunderbird/files/patch-bug2040125
index 22f1854608b2..8fe84102d7de 100644
--- a/mail/thunderbird/files/patch-bug2040125
+++ b/mail/thunderbird/files/patch-bug2040125
@@ -1,38 +1,38 @@
 commit 40a17bafb1d1c647b2548c53cf948f900a43fae0
 Author: Christoph Moench-Tegeder <cmt@burggraben.net>
 
     Bug 2040125 - add GetSystemProxyDirect() to libproxy path r=kershaw,valentin,#necko-reviewers
     
     In bmo #2028356 a "fast-path to skip proxy resolution[...]" was added,
     but the required method GetSystemProxyDirect() was not added for
     libproxy-enabled builds (all other cases - general Unix without
     libproxy, OSX, Windows - got that function).
     
     This makes a "--enable-libproxy" build (MOZ_ENABLE_LIBPROXY) fail at
     startup, as the symbol for nsUnixSystemProxySettings::GetSystemProxyDirect()
     does not resolve.
     
     This adds GetSystemProxyDirect() to the MOZ_ENABLE_LIBPROXY case - it's
     trivial, as we cannot know what libproxy will return for a specific URL,
     thus the fast-path does not apply and we can just return "false".
     
     Differential Revision: https://phabricator.services.mozilla.com/D300937
 
-diff --git a/toolkit/system/unixproxy/nsLibProxySettings.cpp b/toolkit/system/unixproxy/nsLibProxySettings.cpp
+diff --git toolkit/system/unixproxy/nsLibProxySettings.cpp toolkit/system/unixproxy/nsLibProxySettings.cpp
 index 3de1b7ce9b8f..8b063d446c1e 100644
---- a/toolkit/system/unixproxy/nsLibProxySettings.cpp
-+++ b/toolkit/system/unixproxy/nsLibProxySettings.cpp
+--- toolkit/system/unixproxy/nsLibProxySettings.cpp
++++ toolkit/system/unixproxy/nsLibProxySettings.cpp
 @@ -111,6 +111,13 @@ nsUnixSystemProxySettings::GetSystemWPADSetting(bool* aSystemWPADSetting) {
    return NS_OK;
  }
  
 +// we do not know if libproxy would return DIRECT or PROXY
 +NS_IMETHODIMP
 +nsUnixSystemProxySettings::GetSystemProxyDirect(bool* aResult) {
 +  *aResult = false;
 +  return NS_OK;
 +}
 +
  NS_IMPL_COMPONENT_FACTORY(nsUnixSystemProxySettings) {
    return do_AddRef(new nsUnixSystemProxySettings()).downcast<nsISupports>();
  }