diff --git a/mock/c7.1908.00.ppc64le.cfg b/mock/c7.1908.00.ppc64le.cfg
index bd5adc1..bbc3ee8 100644
--- a/mock/c7.1908.00.ppc64le.cfg
+++ b/mock/c7.1908.00.ppc64le.cfg
@@ -31,6 +31,8 @@ assumeyes=1
 syslog_ident=mock
 syslog_device=
 
+exclude=kernel-*4.14.0* *perf*4.14.0* kernel-*4.18.0* *perf*4.18.0*
+
 # repos
 [c7.1708.u.ppc64le]
 name=c7.1708.u.ppc64le
diff --git a/mock/c7.1908.u.ppc64le.cfg b/mock/c7.1908.u.ppc64le.cfg
index a39c8d6..f027a89 100644
--- a/mock/c7.1908.u.ppc64le.cfg
+++ b/mock/c7.1908.u.ppc64le.cfg
@@ -31,7 +31,7 @@ assumeyes=1
 syslog_ident=mock
 syslog_device=
 
-exclude=kernel-*4.14.0* *perf*4.14.0*
+exclude=kernel-*4.14.0* *perf*4.14.0* kernel-*4.18.0* *perf*4.18.0*
 
 # repos
 [c7.1708.u.ppc64le]