diff --git a/system/src/Grav/Console/Gpm/InstallCommand.php b/system/src/Grav/Console/Gpm/InstallCommand.php
index a39c2a931..fee65129e 100644
--- a/system/src/Grav/Console/Gpm/InstallCommand.php
+++ b/system/src/Grav/Console/Gpm/InstallCommand.php
@@ -254,7 +254,7 @@ class InstallCommand extends ConsoleCommand
 
         if ($major_version_changed) {
             if ($this->all_yes) {
-                $this->output-writeln("The package <cyan>$package_name</cyan> will be updated to a new major version <green>$new_version</green>, from <magenta>$old_version</magenta>");
+                $this->output->writeln("The package <cyan>$package_name</cyan> will be updated to a new major version <green>$new_version</green>, from <magenta>$old_version</magenta>");
                 return;
             }