diff --git a/Makefile b/Makefile
index 89321fc..dc61912 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,7 @@ help :
 	@echo ""
 	@echo "  fetch     - Fetch the latest librewolf source."
 	@echo "  build     - Perform './mach build && ./mach package' on it."
+	@echo "  debug     - Perform a debug build with different 'mozconfig'."
 	@echo "  artifacts - Create the setup.exe and the portable.zip."
 	@echo ""
 	@echo "Note: to upload, after artifacts, into the windows repo, use:"
@@ -33,6 +34,9 @@ fetch :
 build :
 	python3 mk.py build
 
+debug :
+	python3 mk.py build-debug
+
 artifacts :
 	python3 mk.py artifacts
 
diff --git a/assets/mozconfig.windows.debug b/assets/mozconfig.windows.debug
new file mode 100644
index 0000000..ed7d245
--- /dev/null
+++ b/assets/mozconfig.windows.debug
@@ -0,0 +1,6 @@
+ac_add_options --enable-application=browser
+
+ac_add_options --enable-debug
+
+#ac_add_options --with-app-name=librewolf
+ac_add_options --with-branding=browser/branding/librewolf
diff --git a/mk.py b/mk.py
index 38d2ee1..1225ae1 100644
--- a/mk.py
+++ b/mk.py
@@ -57,11 +57,11 @@ def fetch():
     
     exec('wget -q -O version https://gitlab.com/librewolf-community/browser/source/-/raw/main/version')
     exec('wget -q -O source_release https://gitlab.com/librewolf-community/browser/source/-/raw/main/release')
-    exec('wget -O librewolf-$(cat version)-$(cat source_release).source.tar.gz https://gitlab.com/librewolf-community/browser/source/-/jobs/artifacts/main/raw/librewolf-$(cat version)-$(cat source_release).source.tar.gz?job=build-job')
+    exec('wget -O librewolf-$(cat version)-$(cat source_release).source.tar.gz https://gitlab.com/librewolf-community/browser/source/-/jobs/artifacts/main/raw/librewolf-$(cat version)-$(cat source_release).source.tar.gz?job=Build')
 
 
     
-def build():
+def build(debug=False):
     
     exec('rm -rf librewolf-$(cat version)')
     exec('tar xf librewolf-$(cat version)-$(cat source_release).source.tar.gz')
@@ -71,7 +71,11 @@ def build():
         os.chdir('librewolf-{}'.format(version))
 
         # patches
-        exec('cp -v ../assets/mozconfig.windows mozconfig')
+        if debug:
+            exec('cp -v ../assets/mozconfig.windows.debug mozconfig')
+        else:
+            exec('cp -v ../assets/mozconfig.windows mozconfig')
+            
         patch('../assets/package-manifest.patch')
 
         # perform the build and package
@@ -142,7 +146,7 @@ def artifacts():
 
 
 
-# utility function
+# Utility function to upload() function.
 def do_upload(filename,token):
     exec('echo _ >> upload.txt')
     exec('curl --request POST --header \"PRIVATE-TOKEN: {}\" --form \"file=@{}\" \"https://gitlab.com/api/v4/projects/13852981/uploads\" >> upload.txt'.format(token,filename),False)
@@ -180,6 +184,7 @@ Use: ./mk.py <command> ...
 commands:
   fetch
   build
+  build-debug
   artifacts
   upload <token>
 
@@ -198,6 +203,9 @@ for arg in sys.argv:
     elif arg == 'build':
         build()
         done_something = True
+    elif arg == 'build-debug':
+        build(True)
+        done_something = True
     elif arg == 'artifacts':
         artifacts()
         done_something = True