diff --git a/src/solidlsp/language_servers/scala_language_server.py b/src/solidlsp/language_servers/scala_language_server.py
index 79a0e205..91a31a32 100644
--- a/src/solidlsp/language_servers/scala_language_server.py
+++ b/src/solidlsp/language_servers/scala_language_server.py
@@ -61,8 +61,8 @@ class ScalaLanguageServer(SolidLanguageServer):
         os.makedirs(metals_home, exist_ok=True)
         metals_executable = os.path.join(metals_home, "metals")
         coursier_command_path = shutil.which("coursier")
-        assert coursier_command_path is not None, "coursier is not installed or not in PATH."
         cs_command_path = shutil.which("cs")
+        assert cs_command_path is not None or coursier_command_path is not None, "coursier is not installed or not in PATH."
 
         if not os.path.exists(metals_executable):
             if not cs_command_path: