diff --git a/SPECS/opa-ff.spec b/SPECS/opa-ff.spec
index 851909b..c4cfbe8 100644
--- a/SPECS/opa-ff.spec
+++ b/SPECS/opa-ff.spec
@@ -72,6 +72,8 @@ This package contains the necessary headers for opamgt development.
 
 # Make it possible to override hardcoded compiler flags
 sed -i -r -e 's/(release_C(C)?OPT_Flags\s*)=/\1?=/' Makerules/Target.LINUX.GNU.*
+# Add MSVSphere detection
+sed -i 's/rhel)/rhel|msvsphere|MSVSphere)/' MakeTools/funcs-ext.sh
 
 %build
 export CFLAGS='%{optflags}'
@@ -394,6 +396,9 @@ BUILDDIR=%{_builddir} DESTDIR=%{buildroot} LIBDIR=%{_libdir} DSAP_LIBDIR=%{_libd
 %{_includedir}/opamgt
 
 %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 Sep 22 2023 MSVSphere Packaging Team <packager@msvsphere-os.ru> - 1:10.12.1.0.6-1
 - Rebuilt for MSVSphere 9.3 beta