diff --git a/mbs-fix-reuse-buildrequires-change.patch b/mbs-fix-reuse-buildrequires-change.patch
new file mode 100644
index 0000000..7543a2e
--- /dev/null
+++ b/mbs-fix-reuse-buildrequires-change.patch
@@ -0,0 +1,35 @@
+diff --git a/module_build_service/utils/reuse.py b/module_build_service/utils/reuse.py
+index efbbc0a..d548264 100644
+--- a/module_build_service/utils/reuse.py
++++ b/module_build_service/utils/reuse.py
+@@ -25,7 +25,7 @@
+ import kobo.rpmlib
+ 
+ import module_build_service.messaging
+-from module_build_service import log, models, conf
++from module_build_service import log, models, conf, glib
+ 
+ 
+ def reuse_component(component, previous_component_build,
+@@ -110,6 +110,21 @@ def _get_reusable_module(session, module):
+         log.info("Cannot re-use.  %r is the first module build." % module)
+         return None
+ 
++    xmd = glib.from_variant_dict(mmd.get_xmd())
++    old_mmd = previous_module_build.mmd()
++    old_xmd = glib.from_variant_dict(old_mmd.get_xmd())
++
++    # Make sure that the module buildrequires commit hashes are exactly the same
++    for br_module_name, br_module in xmd['mbs']['buildrequires'].items():
++        # Assumes that the streams have been replaced with commit hashes, so we
++        # can compare to see if they have changed. Since a build is unique to
++        # a commit hash, this is a safe test.
++        ref1 = br_module.get('ref')
++        ref2 = old_xmd['mbs']['buildrequires'][br_module_name].get('ref')
++        if not (ref1 and ref2) or ref1 != ref2:
++            log.info('Cannot re-use.  The buildrequired module %s ref hash changed', br_module_name)
++            return None
++
+     return previous_module_build
+ 
+ 
diff --git a/module-build-service.spec b/module-build-service.spec
index 7d955f5..b8dc961 100644
--- a/module-build-service.spec
+++ b/module-build-service.spec
@@ -1,6 +1,6 @@
 Name:           module-build-service
 Version:        2.0.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        The Module Build Service for Modularity
 
 Group:          Development/Tools
@@ -8,6 +8,7 @@ License:        MIT
 URL:            https://pagure.io/fm-orchestrator
 Source0:        https://files.pythonhosted.org/packages/source/m/%{name}/%{name}-%{version}.tar.gz
 Patch0:         mbs-fix-empty-requires.patch
+Patch1:         mbs-fix-reuse-buildrequires-change.patch
 
 BuildArch:      noarch
 
@@ -148,6 +149,7 @@ for a number of tasks:
 sed -i '/koji/d' requirements.txt
 
 %patch0 -p1
+%patch1 -p1
 
 
 # Simply remove an old .pyc file that was included in one release.
@@ -204,6 +206,9 @@ done
 
 
 %changelog
+* Thu Apr 05 2018 Jan Kaluza <jkaluza@redhat.com> - 2.0.2-3
+- fix wrong component reuse caused by missing change for buildrequires.
+
 * Thu Apr 05 2018 Jan Kaluza <jkaluza@redhat.com> - 2.0.2-2
 - fix issue with expanded requires section in case empty list is used as input.