diff --git a/fish-rust/build.rs b/fish-rust/build.rs
index 4b60b664b..e76b193c7 100644
--- a/fish-rust/build.rs
+++ b/fish-rust/build.rs
@@ -41,6 +41,7 @@ fn main() -> miette::Result<()> {
         .include(&fish_src_dir)
         .include(&fish_build_dir) // For config.h
         .include(&cxx_include_dir) // For cxx.h
+        .flag("-Wno-comment")
         .compile("fish-rust");
 
     // Emit autocxx junk.
@@ -50,6 +51,7 @@ fn main() -> miette::Result<()> {
         .custom_gendir(autocxx_gen_dir.into())
         .build()?;
     b.flag_if_supported("-std=c++11")
+        .flag("-Wno-comment")
         .compile("fish-rust-autocxx");
     for file in source_files {
         println!("cargo:rerun-if-changed={file}");