diff --git a/src/meson.build b/src/meson.build
index 7150d63dc..69a4bc55f 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -177,8 +177,6 @@ mutter_deps = [
 ]
 
 mutter_c_args = [
-  '-DCLUTTER_ENABLE_COMPOSITOR_API',
-  '-DCOGL_ENABLE_EXPERIMENTAL_API',
   '-DCOGL_ENABLE_MUTTER_API',
   '-DCLUTTER_DISABLE_DEPRECATION_WARNINGS',
   '-DCOGL_DISABLE_DEPRECATION_WARNINGS',
diff --git a/src/tests/cogl/conform/meson.build b/src/tests/cogl/conform/meson.build
index bd725494c..ab4e5b820 100644
--- a/src/tests/cogl/conform/meson.build
+++ b/src/tests/cogl/conform/meson.build
@@ -58,7 +58,6 @@ cogl_test_conformance_includes = [
 
 cogl_test_c_args = [
   cogl_debug_c_args,
-  '-DCOGL_ENABLE_EXPERIMENTAL_API',
   '-DCOGL_DISABLE_DEPRECATED',
   '-DCOGL_DISABLE_DEPRECATION_WARNINGS',
   '-DTESTS_DATADIR="@0@/tests/data"'.format(cogl_srcdir),
diff --git a/src/tests/cogl/unit/meson.build b/src/tests/cogl/unit/meson.build
index bb1f41887..d2e279456 100644
--- a/src/tests/cogl/unit/meson.build
+++ b/src/tests/cogl/unit/meson.build
@@ -28,7 +28,6 @@ foreach unit_test: cogl_unit_tests
     c_args: [
       '-D__COGL_H_INSIDE__',
       '-DCOGL_ENABLE_MUTTER_API',
-      '-DCOGL_ENABLE_EXPERIMENTAL_API',
       '-DCOGL_DISABLE_DEPRECATED',
       '-DCOGL_DISABLE_DEPRECATION_WARNINGS',
     ],