diff --git a/aio/content/examples/observables-in-angular/example-config.json b/aio/content/examples/observables-in-angular/example-config.json
index 548e66ce80..f2b127257b 100644
--- a/aio/content/examples/observables-in-angular/example-config.json
+++ b/aio/content/examples/observables-in-angular/example-config.json
@@ -2,7 +2,7 @@
   "e2e": [
     {
       "cmd": "yarn",
-      "args": [ "tsc", "--project", "./" ]
+      "args": [ "tsc", "--project", "./tsconfig.app.json" ]
     }
   ]
 }
diff --git a/aio/content/examples/observables/example-config.json b/aio/content/examples/observables/example-config.json
index 548e66ce80..f2b127257b 100644
--- a/aio/content/examples/observables/example-config.json
+++ b/aio/content/examples/observables/example-config.json
@@ -2,7 +2,7 @@
   "e2e": [
     {
       "cmd": "yarn",
-      "args": [ "tsc", "--project", "./" ]
+      "args": [ "tsc", "--project", "./tsconfig.app.json" ]
     }
   ]
 }
diff --git a/aio/content/examples/practical-observable-usage/example-config.json b/aio/content/examples/practical-observable-usage/example-config.json
index 548e66ce80..f2b127257b 100644
--- a/aio/content/examples/practical-observable-usage/example-config.json
+++ b/aio/content/examples/practical-observable-usage/example-config.json
@@ -2,7 +2,7 @@
   "e2e": [
     {
       "cmd": "yarn",
-      "args": [ "tsc", "--project", "./" ]
+      "args": [ "tsc", "--project", "./tsconfig.app.json" ]
     }
   ]
 }
diff --git a/aio/content/examples/rx-library/example-config.json b/aio/content/examples/rx-library/example-config.json
index 548e66ce80..f2b127257b 100644
--- a/aio/content/examples/rx-library/example-config.json
+++ b/aio/content/examples/rx-library/example-config.json
@@ -2,7 +2,7 @@
   "e2e": [
     {
       "cmd": "yarn",
-      "args": [ "tsc", "--project", "./" ]
+      "args": [ "tsc", "--project", "./tsconfig.app.json" ]
     }
   ]
 }