diff --git a/AK/MappedFile.cpp b/AK/MappedFile.cpp
index af5a77020d..a65f76b9ab 100644
--- a/AK/MappedFile.cpp
+++ b/AK/MappedFile.cpp
@@ -13,7 +13,7 @@ MappedFile::MappedFile(const String& file_name)
     : m_file_name(file_name)
 {
     m_size = PAGE_SIZE;
-    m_fd = open(m_file_name.characters(), O_RDONLY);
+    m_fd = open(m_file_name.characters(), O_RDONLY | O_CLOEXEC);
     
     if (m_fd != -1) {
         struct stat st;