diff --git a/SPECS/rt-setup.spec b/SPECS/rt-setup.spec
index b42086d..1c42dee 100644
--- a/SPECS/rt-setup.spec
+++ b/SPECS/rt-setup.spec
@@ -47,7 +47,7 @@ make DEST=%{buildroot} install
 %post
 /usr/sbin/groupadd -f -g 71 realtime
 
-if grep kernel.hung_task_panic /etc/sysctl.conf >/dev/null 2>&1
+if grep kernel.hung_task_panic /etc/sysctl.conf /etc/sysctl.d/* >/dev/null 2>&1
 then
 	:
 else
@@ -60,7 +60,7 @@ kernel.hung_task_panic = 0
 EOF
 fi
 
-if grep kernel.hung_task_timeout_secs /etc/sysctl.conf >/dev/null 2>&1
+if grep kernel.hung_task_timeout_secs /etc/sysctl.conf /etc/sysctl.d/* >/dev/null 2>&1
 then
 	:
 else