diff --git a/configure.ac b/configure.ac
index 898f48b4e8..990a59db2a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1531,11 +1531,25 @@ PKG_CHECK_MODULES([V8FS_STATIC], [v8-6.1_static >= 6.1.298],[
 
 PKG_CHECK_MODULES([KS], [libks >= 1.1.0],[
   AM_CONDITIONAL([HAVE_KS],[true])],[
-  AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_KS],[false])])
+    if module_enabled mod_verto; then
+      AC_MSG_ERROR([You need to either install libks or disable mod_verto in modules.conf])
+    else
+      if module_enabled mod_signalwire; then
+        AC_MSG_ERROR([You need to either install libks or disable mod_signalwire in modules.conf])
+      else
+        AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_KS],[false])
+      fi
+    fi
+])
 
 PKG_CHECK_MODULES([SIGNALWIRE_CLIENT], [signalwire_client >= 1.0.0],[
   AM_CONDITIONAL([HAVE_SIGNALWIRE_CLIENT],[true])],[
-  AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_SIGNALWIRE_CLIENT],[false])])
+    if module_enabled mod_signalwire; then
+      AC_MSG_ERROR([You need to either install signalwire-client-c or disable mod_signalwire in modules.conf])
+    else
+      AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_SIGNALWIRE_CLIENT],[false])
+    fi
+])
 
 PKG_CHECK_MODULES([AMQP], [librabbitmq >= 0.5.2],[
   AM_CONDITIONAL([HAVE_AMQP],[true])],[
diff --git a/src/mod/endpoints/mod_verto/Makefile.am b/src/mod/endpoints/mod_verto/Makefile.am
index 6eeac1e6a8..8951fe5e54 100644
--- a/src/mod/endpoints/mod_verto/Makefile.am
+++ b/src/mod/endpoints/mod_verto/Makefile.am
@@ -1,6 +1,7 @@
 include $(top_srcdir)/build/modmake.rulesam
 MODNAME=mod_verto
 
+if HAVE_KS
 mod_LTLIBRARIES       = mod_verto.la
 mod_verto_la_SOURCES  = mod_verto.c mcast/mcast.c
 mod_verto_la_CFLAGS   = -D__EXTENSIONS__ -D_GNU_SOURCE $(AM_CFLAGS) $(KS_CFLAGS)
@@ -37,3 +38,10 @@ swigclean:
 	rm -f mcast/mcast_wrap.* mcast/MCAST.so mcast/MCAST.pm mcast/perlxsi.*
 
 reswig:	swigclean mcast/mcast_wrap.cpp mcast/perlxsi.c
+else
+install: error
+all: error
+error:
+	$(error You must install libks to build mod_verto)
+endif
+