diff --git a/test/fuzz/meson.build b/test/fuzz/meson.build
index 30e26b09cf..706bdb329b 100644
--- a/test/fuzz/meson.build
+++ b/test/fuzz/meson.build
@@ -7,7 +7,10 @@ sanitize_address_undefined = custom_target(
                    project_source_root,
                    '@OUTPUT@',
                    'fuzzers',
-                   '-Dfuzz-tests=true -Db_lundef=false -Db_sanitize=address,undefined --optimization=@0@'.format(get_option('optimization')),
+                   '-Dfuzz-tests=true -Db_lundef=false -Db_sanitize=address,undefined --optimization=@0@ @1@'.format(
+                           get_option('optimization'),
+                           get_option('werror') ? '--werror' : ''
+                   ),
                    ' '.join(cc.cmd_array()),
                    cxx_cmd])