diff --git a/SPECS/libreoffice.spec b/SPECS/libreoffice.spec
index de78063..d140484 100644
--- a/SPECS/libreoffice.spec
+++ b/SPECS/libreoffice.spec
@@ -111,6 +111,9 @@ Source106:      libreoffice-startcenter.desktop
 Source107:      libreoffice-writer.desktop
 Source108:      libreoffice-xsltfilter.desktop
 
+# FSTEC version builds only for x86_64
+ExclusiveArch:  x86_64
+
 # build tools
 BuildRequires: autoconf
 BuildRequires: automake