diff --git a/Cargo.toml b/Cargo.toml
index 9bda2f9f566..228caded553 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -152,8 +152,8 @@ rust.unused_lifetimes = "warn"
 rust.unexpected_cfgs = { level = "warn", check-cfg = [
     # FIXME: https://github.com/hyperledger/iroha/issues/3102
     'cfg(feature, values("ffi_import"))',
-    # FIXME: was never supported https://github.com/hyperledger/iroha/issues/5139
-    #    'cfg(coverage)'
+    # It is set by `cargo-llvm-cov`
+    'cfg(coverage)'
 ] }
 
 # pedantic
diff --git a/crates/iroha_derive/tests/ui.rs b/crates/iroha_derive/tests/ui.rs
index f15eb517c30..f85c931983c 100644
--- a/crates/iroha_derive/tests/ui.rs
+++ b/crates/iroha_derive/tests/ui.rs
@@ -1,3 +1,4 @@
+#![cfg(not(coverage))]
 use trybuild::TestCases;
 
 #[test]