diff --git a/tests/module/loader/.cargo/config.toml b/tests/module/loader/.cargo/config.toml
index 6d87ddea..d5f7398e 100644
--- a/tests/module/loader/.cargo/config.toml
+++ b/tests/module/loader/.cargo/config.toml
@@ -6,3 +6,6 @@ rustflags = ["-C", "link-args=-rdynamic"]
 
 [target.x86_64-unknown-linux-gnu]
 rustflags = ["-C", "link-args=-rdynamic"]
+
+[target.x86_64-unknown-illumos]
+rustflags = ["-C", "link-args=-rdynamic"]
diff --git a/tests/module/loader/tests/load.rs b/tests/module/loader/tests/load.rs
index 5ff16e58..3a0abe1e 100644
--- a/tests/module/loader/tests/load.rs
+++ b/tests/module/loader/tests/load.rs
@@ -136,7 +136,7 @@ fn make_lua() -> Result<Lua> {
         dylib_path = env::var("DYLD_FALLBACK_LIBRARY_PATH").unwrap();
         dylib_ext = "dylib";
         separator = ":";
-    } else if cfg!(target_os = "linux") {
+    } else if cfg!(any(target_os = "linux", target_os = "illumos")) {
         dylib_path = env::var("LD_LIBRARY_PATH").unwrap();
         dylib_ext = "so";
         separator = ":";