diff --git a/packages/@angular/cli/commands/generate.ts b/packages/@angular/cli/commands/generate.ts
index 2080de6c9898..9d6832143245 100644
--- a/packages/@angular/cli/commands/generate.ts
+++ b/packages/@angular/cli/commands/generate.ts
@@ -149,6 +149,12 @@ export default Command.extend({
       if (commandOptions.prefix === undefined) {
         commandOptions.prefix = appConfig.prefix;
       }
+
+      if (schematicName === 'component' || schematicName === 'c') {
+        if (commandOptions.styleext === undefined) {
+          commandOptions.styleext = CliConfig.getValue('defaults.styleExt');
+        }
+      }
     }
 
     const SchematicRunTask = require('../tasks/schematic-run').default;
diff --git a/packages/@angular/cli/tasks/schematic-run.ts b/packages/@angular/cli/tasks/schematic-run.ts
index e1065f348a53..53c7517b6586 100644
--- a/packages/@angular/cli/tasks/schematic-run.ts
+++ b/packages/@angular/cli/tasks/schematic-run.ts
@@ -177,8 +177,7 @@ function prepOptions(schematic: Schematic<{}, {}>, options: SchematicOptions): S
 
   const properties = (<any>schematic.description).schemaJson.properties;
   const keys = Object.keys(properties);
-
-  if (schematic.description.name === 'component') {
+  if (['component', 'c', 'directive', 'd'].indexOf(schematic.description.name) !== -1) {
     options.prefix = (options.prefix === 'false' || options.prefix === '')
       ? '' : options.prefix;
   }