diff --git a/build_system/src/config.rs b/build_system/src/config.rs
index b61c65f7b022..1824bdd292ff 100644
--- a/build_system/src/config.rs
+++ b/build_system/src/config.rs
@@ -165,6 +165,8 @@ impl ConfigInfo {
                 }
                 _ => {}
             }
+            // This should not be needed, but is necessary for the CI in the rust repository.
+            // FIXME: Remove when the rust CI switches to the master version of libgccjit.
             rustflags.push("-Cpanic=abort".to_string());
         } else {
             self.cg_backend_path = current_dir