diff --git a/src/core/libraries/kernel/file_system.cpp b/src/core/libraries/kernel/file_system.cpp
index 24303e53a..e7ac8c7f1 100644
--- a/src/core/libraries/kernel/file_system.cpp
+++ b/src/core/libraries/kernel/file_system.cpp
@@ -357,6 +357,7 @@ s64 PS4_SYSV_ABI posix_lseek(s32 fd, s64 offset, s32 whence) {
     } else if (whence == 2) {
         origin = Common::FS::SeekOrigin::End;
     } else {
+        // whence parameter is invalid
         *__Error() = POSIX_EINVAL;
         return -1;
     }