diff --git a/configure b/configure
index 09ae5ac141..b1ee63c808 100755
--- a/configure
+++ b/configure
@@ -783,13 +783,13 @@ for opt do
   ;;
   --as-shared-lib)
       as_shared_lib="yes"
-      QEMU_CFLAGS="$QEMU_CFLAGS -fPIC -DAS_LIB=1"
-      QEMU_CXXFLAGS="$QEMU_CXXFLAGS -fPIC -DAS_LIB=1"
+      CFLAGS="$CFLAGS -fPIC -DAS_LIB=1"
+      CXXFLAGS="$CXXFLAGS -fPIC -DAS_LIB=1"
   ;;
   --as-static-lib)
       as_static_lib="yes"
-      QEMU_CFLAGS="$QEMU_CFLAGS -fPIC -DAS_LIB=1"
-      QEMU_CXXFLAGS="$QEMU_CXXFLAGS -fPIC -DAS_LIB=1"
+      CFLAGS="$CFLAGS -fPIC -DAS_LIB=1"
+      CXXFLAGS="$CXXFLAGS -fPIC -DAS_LIB=1"
   ;;
   # everything else has the same name in configure and meson
   --*) meson_option_parse "$opt" "$optarg"