diff --git a/src/SPC/builder/unix/library/libaom.php b/src/SPC/builder/unix/library/libaom.php
index e4ae12a3..f636f072 100644
--- a/src/SPC/builder/unix/library/libaom.php
+++ b/src/SPC/builder/unix/library/libaom.php
@@ -19,16 +19,16 @@ trait libaom
         $cc = getenv('CC');
         $cxx = getenv('CXX');
         if (str_contains($cc, 'zig') && getenv('SPC_LIBC') === 'musl') {
-            putenv('CC=' . $cc . ' -D_POSIX_SOURCE');
-            putenv('CXX=' . $cxx . ' -D_POSIX_SOURCE');
+            f_putenv('CC=' . $cc . ' -D_POSIX_SOURCE');
+            f_putenv('CXX=' . $cxx . ' -D_POSIX_SOURCE');
         }
         UnixCMakeExecutor::create($this)
             ->setBuildDir("{$this->source_dir}/builddir")
             ->addConfigureArgs('-DAOM_TARGET_CPU=generic')
             ->build();
         if (str_contains($cc, 'zig') && getenv('SPC_LIBC') === 'musl') {
-            putenv('CC=' . $cc);
-            putenv('CXX=' . $cxx);
+            f_putenv('CC=' . $cc);
+            f_putenv('CXX=' . $cxx);
         }
         $this->patchPkgconfPrefix(['aom.pc']);
     }