diff --git a/packages/@ngtools/webpack/src/angular_compiler_plugin.ts b/packages/@ngtools/webpack/src/angular_compiler_plugin.ts
index 59ba56cbc847..748c963ea30b 100644
--- a/packages/@ngtools/webpack/src/angular_compiler_plugin.ts
+++ b/packages/@ngtools/webpack/src/angular_compiler_plugin.ts
@@ -760,12 +760,12 @@ export class AngularCompilerPlugin implements Tapable {
             .filter((diag) => diag.category === ts.DiagnosticCategory.Warning);
 
           if (errors.length > 0) {
-            const message = formatDiagnostics(this._angularCompilerOptions, errors);
+            const message = formatDiagnostics(errors);
             this._compilation.errors.push(message);
           }
 
           if (warnings.length > 0) {
-            const message = formatDiagnostics(this._angularCompilerOptions, warnings);
+            const message = formatDiagnostics(warnings);
             this._compilation.warnings.push(message);
           }
 
diff --git a/packages/@ngtools/webpack/src/ngtools_api.ts b/packages/@ngtools/webpack/src/ngtools_api.ts
index ee9df8db3594..84300962336e 100644
--- a/packages/@ngtools/webpack/src/ngtools_api.ts
+++ b/packages/@ngtools/webpack/src/ngtools_api.ts
@@ -102,7 +102,7 @@ export interface CreateCompilerHostInterface {
   }): CompilerHost;
 }
 export interface FormatDiagnosticsInterface {
-  (options: CompilerOptions, diags: Diagnostics): string;
+  (diags: Diagnostics): string;
 }
 
 // Manually check for Compiler CLI availability and supported version.
diff --git a/packages/@ngtools/webpack/src/type_checker.ts b/packages/@ngtools/webpack/src/type_checker.ts
index ef20fb4f2af4..664de29d7b4a 100644
--- a/packages/@ngtools/webpack/src/type_checker.ts
+++ b/packages/@ngtools/webpack/src/type_checker.ts
@@ -145,12 +145,12 @@ class TypeChecker {
       const warnings = allDiagnostics.filter((d) => d.category === ts.DiagnosticCategory.Warning);
 
       if (errors.length > 0) {
-        const message = formatDiagnostics(this._angularCompilerOptions, errors);
+        const message = formatDiagnostics(errors);
         console.error(bold(red('ERROR in ' + message)));
       }
 
       if (warnings.length > 0) {
-        const message = formatDiagnostics(this._angularCompilerOptions, warnings);
+        const message = formatDiagnostics(warnings);
         console.log(bold(yellow('WARNING in ' + message)));
       }
     }