diff --git a/libjpeg-turbo.spec b/libjpeg-turbo.spec
index 9ec3b51..8dba5c4 100644
--- a/libjpeg-turbo.spec
+++ b/libjpeg-turbo.spec
@@ -1,6 +1,6 @@
 Name:          libjpeg-turbo
-Version:       1.5.0
-Release:       1mamba
+Version:       1.5.1
+Release:       2mamba
 Summary:       A MMX/SSE2 accelerated library for manipulating JPEG image files
 Group:         System/Libraries
 Vendor:        openmamba
@@ -159,7 +159,7 @@ cd ..
    docdir=%{_docdir}/libjpeg-devel-%{version} \
    exampledir=%{_docdir}/libjpeg-devel-%{version}
 
-%ifarch x86_64
+%ifarch x86_64_disabled
 # x86_64 lib64 support
 make clean
 CC=%{_target_platform}-gcc \
@@ -240,7 +240,7 @@ cp -a lib32/%{_prefix}/lib %{buildroot}%{_prefix}/
 %{_libdir}/libjpeg.so.7.*
 #%doc README-turbo.txt
 
-%ifarch x86_64
+%ifarch x86_64_disabled
 %files -n lib32-libjpeg-turbo
 %defattr(-,root,root)
 %{_prefix}/lib/libjpeg.so.8
@@ -260,6 +260,12 @@ cp -a lib32/%{_prefix}/lib %{buildroot}%{_prefix}/
 %endif
 
 %changelog
+* Thu Sep 22 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 1.5.1-2mamba
+- x86_64: disable the creation of lib32-libjpegturbo packages
+
+* Thu Sep 22 2016 Automatic Build System <autodist@mambasoft.it> 1.5.1-1mamba
+- automatic version update by autodist
+
 * Mon Jun 27 2016 Automatic Build System <autodist@mambasoft.it> 1.5.0-1mamba
 - automatic version update by autodist