diff --git a/configure.ac b/configure.ac
index ad27b4031..3d16c5384 100644
--- a/configure.ac
+++ b/configure.ac
@@ -480,6 +480,7 @@ case $host in
      OBJCXXFLAGS="$CXXFLAGS"
      ;;
    *linux*)
+     TARGET_OS=linux
      LEVELDB_TARGET_FLAGS="-DOS_LINUX"
      ;;
    *freebsd*)