diff --git a/subprojects/gst-plugins-bad/sys/aja/meson.build b/subprojects/gst-plugins-bad/sys/aja/meson.build
index 0f79a7cca3..e2f4dce81b 100644
--- a/subprojects/gst-plugins-bad/sys/aja/meson.build
+++ b/subprojects/gst-plugins-bad/sys/aja/meson.build
@@ -15,8 +15,11 @@ rt_dep = cxx.find_library('rt', required : false)
 
 aja_sdk_dir = get_option('aja-sdk-dir')
 if aja_sdk_dir == ''
-  ajantv2_dep = dependency('libajantv2', include_type: 'system',
-                           required: aja_option, allow_fallback: true)
+  ajantv2_dep = dependency('libajantv2',
+                           include_type: 'system',
+                           required: aja_option,
+                           allow_fallback: true,
+                           default_options: ['warning_level=0'])
   if not ajantv2_dep.found()
     subdir_done()
   endif
diff --git a/subprojects/packagefiles/ntv2/meson.build b/subprojects/packagefiles/ntv2/meson.build
index 02db0a9b15..76804c7682 100644
--- a/subprojects/packagefiles/ntv2/meson.build
+++ b/subprojects/packagefiles/ntv2/meson.build
@@ -22,6 +22,13 @@ foreach cxxflag: test_cppflags
   endif
 endforeach
 
+if get_option('warning_level') == '0'
+  add_project_arguments(
+    cxx.get_supported_arguments(['-Wno-deprecated-declarations']),
+    language: 'cpp',
+  )
+endif
+
 thread_dep = dependency('threads')
 rt_dep = cxx.find_library('rt', required : false)