diff --git a/configure.ac b/configure.ac
index 03b9052104..100bb79e11 100644
--- a/configure.ac
+++ b/configure.ac
@@ -354,6 +354,7 @@ case $host in
      OBJCXXFLAGS="$CXXFLAGS"
      ;;
    *linux*)
+     TARGET_OS=linux
      LEVELDB_TARGET_FLAGS="-DOS_LINUX"
      ;;
    *)