diff --git a/utils/TableGen/CMakeLists.txt b/utils/TableGen/CMakeLists.txt
index 604e3f1..4e5874c 100644
--- a/utils/TableGen/CMakeLists.txt
+++ b/utils/TableGen/CMakeLists.txt
@@ -1,4 +1,7 @@
 set(LLVM_LINK_COMPONENTS Support)
+if (MINGW)
+    set(CMAKE_BUILD_TYPE "Debug")
+endif()
 
 add_tablegen(llvm-tblgen LLVM
   AsmMatcherEmitter.cpp