diff --git a/src/SPC/builder/unix/library/libjxl.php b/src/SPC/builder/unix/library/libjxl.php
index c7ec5a09..021d47dc 100644
--- a/src/SPC/builder/unix/library/libjxl.php
+++ b/src/SPC/builder/unix/library/libjxl.php
@@ -35,7 +35,7 @@ trait libjxl
             ->addConfigureArgs('-DJPEGXL_ENABLE_BENCHMARK=OFF')
             ->addConfigureArgs('-DJPEGXL_ENABLE_PLUGINS=OFF')
             ->addConfigureArgs('-DJPEGXL_ENABLE_SJPEG=OFF')
-            ->addConfigureArgs('-DJPEGXL_STATIC=' . SPCTarget::isStatic() ? 'ON' : 'OFF')
+            ->addConfigureArgs('-DJPEGXL_STATIC=' . (SPCTarget::isStatic() ? 'ON' : 'OFF'))
             ->addConfigureArgs('-DBUILD_TESTING=OFF')
             ->build();
     }