diff --git a/libdb.spec b/libdb.spec
index 7cd1d16..182c45d 100644
--- a/libdb.spec
+++ b/libdb.spec
@@ -4,7 +4,7 @@
 Summary: The Berkeley DB database library for C
 Name: libdb
 Version: 5.3.28
-Release: 27%{?dist}
+Release: 28%{?dist}
 Source0: http://download.oracle.com/berkeley-db/db-%{version}.tar.gz
 Source1: http://download.oracle.com/berkeley-db/db.1.85.tar.gz
 # For mt19937db.c
@@ -290,6 +290,9 @@ LDBJ=./.libs/libdb_java-%{__soversion}.la
 if test -f ${LDBJ} -a ! -f ${LDBJ}i; then
 	sed -e 's,^installed=no,installed=yes,' < ${LDBJ} > ${LDBJ}i
 fi
+
+# Run some quick subsystem checks
+echo "source ../../test/tcl/test.tcl; r env; r mut; r memp" | tclsh
 popd
 
 %install
@@ -448,6 +451,9 @@ rm -rf ${RPM_BUILD_ROOT}
 %{_libdir}/libdb_java.so
 
 %changelog
+* Tue Oct 24 2017 Petr Kubat <pkubat@redhat.com> 5.3.21-28
+- Run a number of quick subsystem checks on build
+
 * Thu Sep 07 2017 Petr Kubat <pkubat@redhat.com> 5.3.21-27
 - Fail properly when encountering removed or 0-byte regions (#1471011)