diff --git a/SPECS/opa-fm.spec b/SPECS/opa-fm.spec
index 2966a5d..617e7de 100644
--- a/SPECS/opa-fm.spec
+++ b/SPECS/opa-fm.spec
@@ -9,7 +9,7 @@
 Name: opa-fm
 Epoch: 1
 Version: 10.12.1.0.6
-Release: 1%{?dist}
+Release: 1%{?dist}.inferit
 Summary: Intel Omni-Path Fabric Management Software
 
 License: GPLv2 or BSD
@@ -45,6 +45,8 @@ Fabric Executive, and some fabric management tools.
 # Make it possible to override hardcoded compiler flags
 sed -i -r -e 's/(release_C(C)?OPT_Flags\s*)=/\1?=/' Makerules/Target.LINUX.GNU.*
 sed -r -e 's/(^COPT\s*=\s*)/#\1/' -i Esm/ib/src/linux/opafmvf/Makefile
+# Add MSVSphere detection
+sed -i 's/rhel)/rhel|msvsphere|MSVSphere)/' MakeTools/funcs-ext.sh
 
 %build
 export CFLAGS='%{optflags} -std=gnu11'
@@ -85,6 +87,9 @@ chmod a-x %{buildroot}/%{_prefix}/share/opa-fm/opafm_src.xml
 %{_mandir}/man8/*
 
 %changelog
+* Mon Oct  9 2023 Arkady L. Shane <tigro@msvsphere-os.ru> - 1:10.12.1.0.6-1
+- Debranding for MSVSphere 9.3
+
 * Fri Jun 02 2023 Kamal Heib <kheib@redhat.com> - 1:10.12.1.0.6-1
 - Update to upstream release 10.12.1.0.6
 - Resolves: rhbz#2170632, rhbz#2159649