Index: Source/WTF/wtf/posix/FileSystemPOSIX.cpp
--- Source/WTF/wtf/posix/FileSystemPOSIX.cpp.orig
+++ Source/WTF/wtf/posix/FileSystemPOSIX.cpp
@@ -116,7 +116,11 @@ std::optional<WallTime> fileCreationTime(const String&
     if (stat(fsRep.data(), &fileInfo) == -1)
         return std::nullopt;
 
+#if OS(OPENBSD)
+    return WallTime::fromRawSeconds(fileInfo.__st_birthtime);
+#else
     return WallTime::fromRawSeconds(fileInfo.st_birthtime);
+#endif
 #endif
 #endif
 
