build-sys: Fix a variable value check

diff --git a/configure.ac b/configure.ac
index 26ebd8c..6b67dac 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1468,7 +1468,7 @@ AC_CONFIG_FILES([src/default.pa:src/daemon/default.pa.in],
     [m4 src/default.pa > src/default.pa.gen && mv src/default.pa.gen src/default.pa])
 AC_CONFIG_FILES([src/system.pa:src/daemon/system.pa.in],
     [m4 src/system.pa > src/system.pa.gen && mv src/system.pa.gen src/system.pa])
-AS_IF([test "$HAVE_SYSTEMD_DAEMON" = "x1"],
+AS_IF([test "x$HAVE_SYSTEMD_DAEMON" = "x1"],
     [
         AC_CONFIG_FILES([src/pulseaudio.service:src/daemon/systemd/user/pulseaudio.service.in])
     ])