diff --git a/scripts/make_common.sh b/scripts/make_common.sh
index 4120ac33..285f129b 100755
--- a/scripts/make_common.sh
+++ b/scripts/make_common.sh
@@ -5,6 +5,10 @@ BUILD_CLEAN=$2
 IS_MINGW=$3
 IS_WIN32=$4
 
+if [[ -z "${BUILD_TYPE}" ]]; then
+  BUILD_TYPE=Release
+fi
+
 if [ "${IS_MINGW}" == "1" ] || [ "${IS_WIN32}" == "1" ]; then
   BUILD_ROOT=build2
 else
diff --git a/scripts/setup_msys2.sh b/scripts/setup_msys2.sh
index 92ea296a..1d11e7c9 100755
--- a/scripts/setup_msys2.sh
+++ b/scripts/setup_msys2.sh
@@ -7,5 +7,4 @@ pacman -Sqyuu --noconfirm &&
     mingw64/mingw-w64-x86_64-make \
     mingw64/mingw-w64-x86_64-toolchain \
     msys/git \
-    msys/mercurial \
     make