diff --git a/packages/angular_devkit/schematics/src/rules/template.ts b/packages/angular_devkit/schematics/src/rules/template.ts
index 325868a43f..0910b02a67 100644
--- a/packages/angular_devkit/schematics/src/rules/template.ts
+++ b/packages/angular_devkit/schematics/src/rules/template.ts
@@ -133,12 +133,13 @@ export function applyPathTemplate<T extends PathTemplateData>(
           if (!(pipe in data)) {
             throw new UnknownPipeException(pipe);
           }
-          if (typeof data[pipe] != 'function') {
+          const pipeFn = data[pipe];
+          if (typeof pipeFn != 'function') {
             throw new InvalidPipeException(pipe);
           }
 
           // Coerce to string.
-          return '' + data[pipe](acc);
+          return '' + pipeFn(acc);
         }, '' + replacement);
       }