diff --git a/graphviz.spec b/graphviz.spec
index 5935ea1..b4c0d92 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -17,7 +17,7 @@
 %ifarch %{e2k} %{riscv} loongarch64
 %bcond_with ruby
 %bcond_with php
-%bcond_with tcl
+%bcond_without tcl
 %endif
 
 %define cdt_major 5
@@ -378,6 +378,7 @@ sed -i 's!e2k!e2k*!g' configure.ac
 touch debian/libgvphp7.install.in
 
 %build
+export TCLCONFIG="%{_libdir}/tclConfig.sh"
 ./autogen.sh
 #autoreconf -fi