diff --git a/configure.ac b/configure.ac
index 1670b01ac..6bafe5fbb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1709,7 +1709,7 @@ AM_CONDITIONAL(USE_LIBNTTFFT, test x$bliss = xtrue -o x$newhope = xtrue)
 AM_CONDITIONAL(USE_LIBTNCIF, test x$tnc_tnccs = xtrue -o x$imcv = xtrue)
 AM_CONDITIONAL(USE_LIBTNCCS, test x$tnc_tnccs = xtrue)
 AM_CONDITIONAL(USE_LIBPTTLS, test x$tnc_tnccs = xtrue)
-AM_CONDITIONAL(USE_LIBTPMTSS, test x$tss_trousers = xtrue -o x$tss_tss2 = xtrue -o x$tpm -o x$aikgen = xtrue -o x$imcv = xtrue)
+AM_CONDITIONAL(USE_LIBTPMTSS, test x$tss_trousers = xtrue -o x$tss_tss2 = xtrue -o x$tpm = xtrue -o x$aikgen = xtrue -o x$imcv = xtrue)
 AM_CONDITIONAL(USE_FILE_CONFIG, test x$stroke = xtrue)
 AM_CONDITIONAL(USE_IPSEC_SCRIPT, test x$stroke = xtrue -o x$scepclient = xtrue -o x$conftest = xtrue)
 AM_CONDITIONAL(USE_LIBCAP, test x$capabilities = xlibcap)