diff --git a/Userland/Libraries/LibCore/AnonymousBuffer.cpp b/Userland/Libraries/LibCore/AnonymousBuffer.cpp
index e30d229c7c..ef55f8bfdb 100644
--- a/Userland/Libraries/LibCore/AnonymousBuffer.cpp
+++ b/Userland/Libraries/LibCore/AnonymousBuffer.cpp
@@ -64,6 +64,7 @@ AnonymousBuffer AnonymousBuffer::create_with_size(size_t size)
         return {};
     }
     if (ftruncate(fd, size) < 0) {
+        close(fd);
         perror("ftruncate");
         return {};
     }