diff --git a/utils/TableGen/CMakeLists.txt b/utils/TableGen/CMakeLists.txt
index ca3413893e08..e24314c3e0ec 100644
--- a/utils/TableGen/CMakeLists.txt
+++ b/utils/TableGen/CMakeLists.txt
@@ -25,6 +25,7 @@ add_executable(tblgen
   DisassemblerEmitter.cpp
   EDEmitter.cpp
   FastISelEmitter.cpp
+  FixedLenDecoderEmitter.cpp
   InstrEnumEmitter.cpp
   InstrInfoEmitter.cpp
   IntrinsicEmitter.cpp