diff --git a/scripts/build-shotcut-msys2.sh b/scripts/build-shotcut-msys2.sh
index f8a353dfbd..8c6a405af4 100755
--- a/scripts/build-shotcut-msys2.sh
+++ b/scripts/build-shotcut-msys2.sh
@@ -546,8 +546,13 @@ function set_globals {
 
   #####
   # mlt
-  CONFIG[1]="cmake -GNinja -DCMAKE_INSTALL_PREFIX=$FINAL_INSTALL_DIR -DCMAKE_PREFIX_PATH=$QTDIR -DMOD_GDK=OFF -DMOD_GLAXNIMATE_QT6=ON -DMOD_QT=OFF -DMOD_QT6=ON -DMOD_SDL1=OFF $CMAKE_DEBUG_FLAG"
+  CONFIG[1]="cmake -GNinja -DCMAKE_INSTALL_PREFIX=$FINAL_INSTALL_DIR -DCMAKE_PREFIX_PATH=$QTDIR -DMOD_GDK=OFF -DMOD_GLAXNIMATE_QT6=ON -DMOD_QT=OFF -DMOD_QT6=ON -DMOD_SDL1=OFF"
   [ "$ENABLE_OPENCV" = "1" ] && CONFIG[1]="${CONFIG[1]} -DMOD_OPENCV=ON"
+  if [ "$DEBUG_BUILD" = "1" ]; then
+    CONFIG[1]="${CONFIG[1]} -DCMAKE_BUILD_TYPE=RelWithDebInfo"
+  else
+    CONFIG[1]="${CONFIG[1]} -DCMAKE_BUILD_TYPE=Release"
+  fi
   CFLAGS_[1]="-I$FINAL_INSTALL_DIR/include $ASAN_CFLAGS $CFLAGS"
   CXXFLAGS_[1]="${CFLAGS_[1]} -std=c++11 -D_XOPEN_SOURCE=700"
   LDFLAGS_[1]="-L$FINAL_INSTALL_DIR/lib $ASAN_LDFLAGS $LDFLAGS"