diff --git a/xrdb.spec b/xrdb.spec
index df968de..6ada16b 100644
--- a/xrdb.spec
+++ b/xrdb.spec
@@ -1,6 +1,6 @@
 Name:          xrdb
 Version:       1.2.1
-Release:       1mamba
+Release:       2mamba
 Summary:       X server resource database utility
 Group:         System/X11
 Vendor:        openmamba
@@ -14,16 +14,20 @@ BuildRequires: glibc-devel
 BuildRequires: libX11-devel
 BuildRequires: libXmu-devel
 ## AUTOBUILDREQ-END
-Requires:      gcc-cpp
+Requires:      mcpp
 
 %description
 X server resource database utility.
 
+%debug_package
+
 %prep
 %setup -q
 
 %build
-%configure
+%configure \
+   --with-cpp=%{_bindir}/cpp,%{_bindir}/mcpp
+
 %make
 
 %install
@@ -37,9 +41,13 @@ X server resource database utility.
 %defattr(-,root,root)
 %{_bindir}/xrdb
 %{_mandir}/man1/xrdb.1.*
-%doc COPYING ChangeLog
+%doc COPYING
+#ChangeLog
 
 %changelog
+* Tue Jan 04 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 1.2.1-2mamba
+- require mcpp as preprocessor instead of gcc-cpp
+
 * Sat Aug 21 2021 Automatic Build System <autodist@mambasoft.it> 1.2.1-1mamba
 - automatic version update by autodist
 
@@ -64,5 +72,5 @@ X server resource database utility.
 * Mon Oct 26 2009 Automatic Build System <autodist@mambasoft.it> 1.0.6-1mamba
 - automatic update by autodist
 
-* Thu Oct 16 2009 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.5-1mamba
+* Fri Oct 16 2009 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.5-1mamba
 - package created by autospec