diff --git a/packages/core/src/image_performance_warning.ts b/packages/core/src/image_performance_warning.ts
index 0409dc5d4b8ac..b749078962794 100644
--- a/packages/core/src/image_performance_warning.ts
+++ b/packages/core/src/image_performance_warning.ts
@@ -155,12 +155,12 @@ function logLazyLCPWarning(src: string) {
   console.warn(formatRuntimeError(
       RuntimeErrorCode.IMAGE_PERFORMANCE_WARNING,
       `An image with src ${src} is the Largest Contentful Paint (LCP) element ` +
-          `but was given a "loading" value of "lazy", which can negatively impact` +
+          `but was given a "loading" value of "lazy", which can negatively impact ` +
           `application loading performance. This warning can be addressed by ` +
           `changing the loading value of the LCP image to "eager", or by using the ` +
           `NgOptimizedImage directive's prioritization utilities. For more ` +
           `information about addressing or disabling this warning, see ` +
-          `https://angular.io/errors/NG2965`));
+          `https://angular.io/errors/NG0913`));
 }
 
 function logOversizedImageWarning(src: string) {
@@ -169,5 +169,5 @@ function logOversizedImageWarning(src: string) {
       `An image with src ${src} has intrinsic file dimensions much larger than its ` +
           `rendered size. This can negatively impact application loading performance. ` +
           `For more information about addressing or disabling this warning, see ` +
-          `https://angular.io/errors/NG2965`));
+          `https://angular.io/errors/NG0913`));
 }