diff --git a/configure.ac b/configure.ac
index 2fc603d..d041c1a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -39,6 +39,8 @@
 PKG_CHECK_MODULES(OSMOGSM, libosmogsm >= 0.11.0)
 PKG_CHECK_MODULES(OSMOABIS, libosmoabis)
 PKG_CHECK_MODULES(OSMOSIM, libosmosim)
+PKG_CHECK_MODULES(OSMOUSB, libosmousb)
+PKG_CHECK_MODULES(OSMOSIMTRACE2, libosmo-simtrace2)
 PKG_CHECK_MODULES(USB, libusb-1.0)
 
 AC_ARG_ENABLE([remsim-server],[AS_HELP_STRING([--disable-remsim-server], [Build osmo-remsim-server])],