diff --git a/packages/angular_devkit/build_angular/src/webpack/configs/styles.ts b/packages/angular_devkit/build_angular/src/webpack/configs/styles.ts
index b396c329cb29..b1ec2fcec2d0 100644
--- a/packages/angular_devkit/build_angular/src/webpack/configs/styles.ts
+++ b/packages/angular_devkit/build_angular/src/webpack/configs/styles.ts
@@ -232,7 +232,7 @@ export function getStylesConfig(wco: WebpackConfigOptions): Configuration {
             sassImplementation,
             includePaths,
             false,
-            !buildOptions.verbose,
+            !!buildOptions.verbose,
             !!buildOptions.preserveSymlinks,
           ),
         },
@@ -254,7 +254,7 @@ export function getStylesConfig(wco: WebpackConfigOptions): Configuration {
             sassImplementation,
             includePaths,
             true,
-            !buildOptions.verbose,
+            !!buildOptions.verbose,
             !!buildOptions.preserveSymlinks,
           ),
         },