diff --git a/graphviz.spec b/graphviz.spec
index f969424..387c7f8 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -377,12 +377,12 @@ sed -i 's!e2k!e2k*!g' configure.ac
 
 touch debian/libgvphp7.install.in
 
+%build
+export TCLCONFIG="%{_libdir}/tclConfig.sh"
 %if %__isa_bits == 64
 export LIBPOSTFIX="64"
 %endif
 
-%build
-export TCLCONFIG="%{_libdir}/tclConfig.sh"
 ./autogen.sh
 #autoreconf -fi