diff --git a/Userland/passwd.cpp b/Userland/passwd.cpp
index 3ec586adc05..cfb2e7e57a0 100644
--- a/Userland/passwd.cpp
+++ b/Userland/passwd.cpp
@@ -35,7 +35,7 @@
 int main(int argc, char** argv)
 {
     if (geteuid() != 0) {
-        fprintf(stderr, "Not running as root :^(\n");
+        warnln("Not running as root :^(");
         return 1;
     }
 
@@ -82,7 +82,7 @@ int main(int argc, char** argv)
         : Core::Account::from_uid(current_uid, Core::Account::OpenPasswdFile::ReadWrite, Core::Account::OpenShadowFile::ReadWrite);
 
     if (account_or_error.is_error()) {
-        fprintf(stderr, "Core::Account::%s: %s\n", (username) ? "from_name" : "from_uid", account_or_error.error().characters());
+        warnln("Core::Account::{}: {}", (username) ? "from_name" : "from_uid", account_or_error.error());
         return 1;
     }
 
@@ -111,7 +111,7 @@ int main(int argc, char** argv)
     auto& target_account = account_or_error.value();
 
     if (current_uid != 0 && current_uid != target_account.uid()) {
-        fprintf(stderr, "You can't modify passwd for %s\n", username);
+        warnln("You can't modify passwd for {}", username);
         return 1;
     }
 
@@ -124,7 +124,7 @@ int main(int argc, char** argv)
     } else {
         auto new_password = Core::get_password("New password: ");
         if (new_password.is_error()) {
-            fprintf(stderr, "%s\n", strerror(new_password.error()));
+            warnln("{}", strerror(new_password.error()));
             return 1;
         }
 
diff --git a/Userland/su.cpp b/Userland/su.cpp
index 070070bf040..d74e9a38e8a 100644
--- a/Userland/su.cpp
+++ b/Userland/su.cpp
@@ -52,8 +52,10 @@ int main(int argc, char** argv)
     args_parser.add_positional_argument(user, "User to switch to (defaults to user with UID 0)", "user", Core::ArgsParser::Required::No);
     args_parser.parse(argc, argv);
 
-    if (geteuid() != 0)
-        fprintf(stderr, "Not running as root :(\n");
+    if (geteuid() != 0) {
+        warnln("Not running as root :(");
+        return 1;
+    }
 
     auto account_or_error = (user)
         ? Core::Account::from_name(user, Core::Account::OpenPasswdFile::No, Core::Account::OpenShadowFile::ReadOnly)
@@ -73,12 +75,12 @@ int main(int argc, char** argv)
     if (getuid() != 0 && account.has_password()) {
         auto password = Core::get_password();
         if (password.is_error()) {
-            fprintf(stderr, "%s\n", strerror(password.error()));
+            warnln("{}", strerror(password.error()));
             return 1;
         }
 
         if (!account.authenticate(password.value().characters())) {
-            fprintf(stderr, "Incorrect or disabled password.\n");
+            warnln("Incorrect or disabled password.");
             return 1;
         }
     }