diff --git a/drbd.changes b/drbd.changes
index 97f42fa..9888dc8 100644
--- a/drbd.changes
+++ b/drbd.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Jan 24 02:38:00 UTC 2025 - Heming Zhao <heming.zhao@suse.com>
+
+-  drbd failed to build with SLFO kernel candidate (bsc#1235595)
+  * update drbd.spec
+
 -------------------------------------------------------------------
 Wed Jan  8 07:08:00 UTC 2025 - Heming Zhao <heming.zhao@suse.com>
 
diff --git a/drbd.spec b/drbd.spec
index a7fc0fb..898fc6d 100644
--- a/drbd.spec
+++ b/drbd.spec
@@ -19,10 +19,14 @@
 
 # RT enabled in Leap15.2(but not in Tumbleweed)
 %if ! 0%{?is_opensuse} || 0%{?sle_version} >= 150200
+# temporarily disable the rt build (bsc#1235595)
+%if 0%{?suse_version} < 1600
 %ifarch x86_64
 %define buildrt 1
 %endif
 %endif
+%endif
+
 Name:           drbd
 Version:        9.1.23
 Release:        0