diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index 8cbb1938af..e5695f3698 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -499,6 +499,7 @@ else()
 
         # Files from base Kernel
         CommandLine.cpp
+        KBufferBuilder.cpp
         KString.cpp
         KSyms.cpp
         MiniStdLib.cpp