diff --git a/src/tools/compiletest/src/directive-list.rs b/src/tools/compiletest/src/directive-list.rs
index 1406553c9ea7b..d19a159e31459 100644
--- a/src/tools/compiletest/src/directive-list.rs
+++ b/src/tools/compiletest/src/directive-list.rs
@@ -205,6 +205,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "only-mips64",
     "only-msp430",
     "only-msvc",
+    "only-musl",
     "only-nightly",
     "only-nvptx64",
     "only-powerpc",
diff --git a/tests/ui/codegen/duplicated-path-in-error.stderr b/tests/ui/codegen/duplicated-path-in-error.gnu.stderr
similarity index 100%
rename from tests/ui/codegen/duplicated-path-in-error.stderr
rename to tests/ui/codegen/duplicated-path-in-error.gnu.stderr
diff --git a/tests/ui/codegen/duplicated-path-in-error.musl.stderr b/tests/ui/codegen/duplicated-path-in-error.musl.stderr
new file mode 100644
index 0000000000000..2892ebffdde6a
--- /dev/null
+++ b/tests/ui/codegen/duplicated-path-in-error.musl.stderr
@@ -0,0 +1,2 @@
+error: couldn't load codegen backend /non-existing-one.so: Error loading shared library /non-existing-one.so: No such file or directory
+
diff --git a/tests/ui/codegen/duplicated-path-in-error.rs b/tests/ui/codegen/duplicated-path-in-error.rs
index a446395de208f..1852a6301b55f 100644
--- a/tests/ui/codegen/duplicated-path-in-error.rs
+++ b/tests/ui/codegen/duplicated-path-in-error.rs
@@ -1,5 +1,8 @@
+//@ revisions: musl gnu
 //@ only-linux
 //@ compile-flags: -Zcodegen-backend=/non-existing-one.so
+//@[gnu] only-gnu
+//@[musl] only-musl
 
 // This test ensures that the error of the "not found dylib" doesn't duplicate
 // the path of the dylib.