diff --git a/platformio/exception.py b/platformio/exception.py
index 8ae549bc..ef1d3bab 100644
--- a/platformio/exception.py
+++ b/platformio/exception.py
@@ -55,8 +55,8 @@ class InvalidUdevRules(PlatformioException):
 class MissedUdevRules(InvalidUdevRules):
 
     MESSAGE = (
-        "Warning! Please install `99-platformio-udev.rules`. \nMode details: "
-        "https://docs.platformio.org/en/latest/faq.html#platformio-udev-rules"
+        "Warning! Please install `99-platformio-udev.rules`. \nMore details: "
+        "https://docs.platformio.org/page/faq.html#platformio-udev-rules"
     )
 
 
@@ -64,8 +64,8 @@ class OutdatedUdevRules(InvalidUdevRules):
 
     MESSAGE = (
         "Warning! Your `{0}` are outdated. Please update or reinstall them."
-        "\n Mode details: https://docs.platformio.org"
-        "/en/latest/faq.html#platformio-udev-rules"
+        "\nMore details: "
+        "https://docs.platformio.org/page/faq.html#platformio-udev-rules"
     )
 
 
diff --git a/platformio/maintenance.py b/platformio/maintenance.py
index 1900db49..e038bcc0 100644
--- a/platformio/maintenance.py
+++ b/platformio/maintenance.py
@@ -148,7 +148,7 @@ def after_upgrade(ctx):
         click.secho("Please remove multiple PIO Cores from a system:", fg="yellow")
         click.secho(
             "https://docs.platformio.org/page/faq.html"
-            "#multiple-pio-cores-in-a-system",
+            "#multiple-platformio-cores-in-a-system",
             fg="cyan",
         )
         click.secho("*" * terminal_width, fg="yellow")