1 files changed, 2 insertions, 2 deletions
diff --git a/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts b/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts
index 53449e5e1..53b77aed5 100644
--- a/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts
+++ b/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts
@@ -7,8 +7,8 @@ import { AbstractArtifactAdapter } from './abstract_artifact_adapter';
 import { SolCompilerArtifactAdapter } from './sol_compiler_artifact_adapter';
 
 export class TruffleArtifactAdapter extends AbstractArtifactAdapter {
-    private _solcVersion: string;
-    private _sourcesPath: string;
+    private readonly _solcVersion: string;
+    private readonly _sourcesPath: string;
     constructor(sourcesPath: string, solcVersion: string) {
         super();
         this._solcVersion = solcVersion;