diff --git a/browser/confvars.sh b/browser/confvars.sh
index de01dfadb825..98393ddf2860 100755
--- a/browser/confvars.sh
+++ b/browser/confvars.sh
@@ -62,8 +62,5 @@ MOZ_ACTIVITIES=1
 MOZ_JSDOWNLOADS=1
 MOZ_RUST_MP4PARSE=1
 
-# Enable checking that add-ons are signed by the trusted root
-MOZ_ADDON_SIGNING=1
-
 # Include the DevTools client, not just the server (which is the default)
 MOZ_DEVTOOLS=all
diff --git a/build/mozconfig.common b/build/mozconfig.common
index 1bdf69ddc5c3..6e19ae80ecac 100644
--- a/build/mozconfig.common
+++ b/build/mozconfig.common
@@ -16,6 +16,11 @@ ac_add_options --enable-crashreporter
 
 ac_add_options --enable-release
 
+# Enable checking that add-ons are signed by the trusted root
+MOZ_ADDON_SIGNING=${MOZ_ADDON_SIGNING-1}
+# Disable enforcing that add-ons are signed by the trusted root
+MOZ_REQUIRE_SIGNING=${MOZ_REQUIRE_SIGNING-0}
+
 ac_add_options --enable-js-shell
 
 . "$topsrcdir/build/mozconfig.automation"
diff --git a/mobile/android/confvars.sh b/mobile/android/confvars.sh
index c23dd8f38943..64addad00a35 100644
--- a/mobile/android/confvars.sh
+++ b/mobile/android/confvars.sh
@@ -99,9 +99,6 @@ if test "$NIGHTLY_BUILD"; then
   MOZ_ANDROID_APZ=1
 fi
 
-# Enable checking that add-ons are signed by the trusted root
-MOZ_ADDON_SIGNING=1
-
 # Enable the Switchboard A/B framework code.
 # Note: The framework is always included in the app. This flag controls
 # usage of the framework.
diff --git a/old-configure.in b/old-configure.in
index 65de13399067..bd8a08942f53 100644
--- a/old-configure.in
+++ b/old-configure.in
@@ -2804,8 +2804,6 @@ MOZ_CONTENT_SANDBOX=
 MOZ_GMP_SANDBOX=
 MOZ_SANDBOX=1
 MOZ_BINARY_EXTENSIONS=
-MOZ_ADDON_SIGNING=
-MOZ_REQUIRE_SIGNING=
 MOZ_DEVTOOLS=server
 
 case "$target_os" in
@@ -7044,13 +7042,17 @@ AC_SUBST(MOZ_FIX_LINK_PATHS)
 AC_SUBST(MOZ_POST_PROGRAM_COMMAND)
 AC_SUBST(MOZ_LINKER_EXTRACT)
 
-AC_SUBST(MOZ_ADDON_SIGNING)
-AC_SUBST(MOZ_REQUIRE_SIGNING)
-
 if test -n "$MOZ_BINARY_EXTENSIONS"; then
   AC_DEFINE(MOZ_BINARY_EXTENSIONS)
 fi
 
+if test "$MOZ_ADDON_SIGNING" = 1; then
+  AC_DEFINE(MOZ_ADDON_SIGNING)
+fi
+if test "$MOZ_REQUIRE_SIGNING" = 1; then
+  AC_DEFINE(MOZ_REQUIRE_SIGNING)
+fi
+
 AC_SUBST(MOZ_JSDOWNLOADS)
 if test -n "$MOZ_JSDOWNLOADS"; then
   AC_DEFINE(MOZ_JSDOWNLOADS)
diff --git a/toolkit/modules/moz.build b/toolkit/modules/moz.build
index 68c390cec143..f58876d028af 100644
--- a/toolkit/modules/moz.build
+++ b/toolkit/modules/moz.build
@@ -124,7 +124,6 @@ for var in ('ANDROID_PACKAGE_NAME',
             DEFINES[var] = CONFIG[var]
 
 for var in ('MOZ_TOOLKIT_SEARCH',
-            'MOZ_REQUIRE_SIGNING',
             'MOZ_SYSTEM_NSS',
             'MOZ_UPDATER'):
     if CONFIG[var]:
diff --git a/toolkit/mozapps/extensions/internal/moz.build b/toolkit/mozapps/extensions/internal/moz.build
index ec586b968d7a..9574e54b30d1 100644
--- a/toolkit/mozapps/extensions/internal/moz.build
+++ b/toolkit/mozapps/extensions/internal/moz.build
@@ -28,9 +28,3 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] != 'android':
 EXTRA_PP_JS_MODULES.addons += [
     'AddonConstants.jsm',
 ]
-
-if CONFIG['MOZ_ADDON_SIGNING']:
-    DEFINES['MOZ_ADDON_SIGNING'] = 1
-
-if CONFIG['MOZ_REQUIRE_SIGNING']:
-    DEFINES['MOZ_REQUIRE_SIGNING'] = 1