diff --git a/src/PhpBrew/VariantBuilder.php b/src/PhpBrew/VariantBuilder.php
index f1ed6b34f..243b2f7dd 100644
--- a/src/PhpBrew/VariantBuilder.php
+++ b/src/PhpBrew/VariantBuilder.php
@@ -318,7 +318,7 @@ public function __construct()
                     if (file_exists($prefix)) {
                         return "--with-curl=$prefix";
                     }
-                    echo "homebrew prefix '$output' doesn't exist. you forgot to install?\n";
+                    echo "homebrew prefix '$prefix' doesn't exist. you forgot to install?\n";
                 }
             }
             if ($bin = Utils::findBin('curl-config')) {
@@ -326,7 +326,7 @@ public function __construct()
                     if (file_exists($prefix)) {
                         return "--with-curl=$prefix";
                     }
-                    echo "homebrew prefix '$output' doesn't exist. you forgot to install?\n";
+                    echo "homebrew prefix '$prefix' doesn't exist. you forgot to install?\n";
                 }
             }