diff --git a/configure.in b/configure.in
index ff7180dc4..a483cf44f 100644
--- a/configure.in
+++ b/configure.in
@@ -1041,7 +1041,7 @@ AM_CONDITIONAL(USE_CHARON, test x$charon = xtrue)
 AM_CONDITIONAL(USE_TOOLS, test x$tools = xtrue)
 AM_CONDITIONAL(USE_SCRIPTS, test x$scripts = xtrue)
 AM_CONDITIONAL(USE_CONFTEST, test x$conftest = xtrue)
-AM_CONDITIONAL(USE_LIBSTRONGSWAN, test x$charon = xtrue -o x$pluto = xtrue -o x$tools = xtrue -o x$conftest = xtrue -o x$fast = xtrue)
+AM_CONDITIONAL(USE_LIBSTRONGSWAN, test x$charon = xtrue -o x$pluto = xtrue -o x$tools = xtrue -o x$conftest = xtrue -o x$fast = xtrue -o x$imcv = xtrue)
 AM_CONDITIONAL(USE_LIBHYDRA, test x$charon = xtrue -o x$pluto = xtrue)
 AM_CONDITIONAL(USE_LIBCHARON, test x$charon = xtrue -o x$conftest = xtrue)
 AM_CONDITIONAL(USE_LIBTNCIF, test x$charon = xtrue -o x$conftest = xtrue -o x$imcv = xtrue)