diff --git a/botan.spec b/botan.spec
index 152b95f..1727451 100644
--- a/botan.spec
+++ b/botan.spec
@@ -136,7 +136,7 @@ rm -rf checks/ec_tests.cpp
 # fixme: maybe disable unix_procs, very slow.
 %global disable_modules gnump
 
-./configure.py \
+%{__python2} ./configure.py \
         --prefix=%{_prefix} \
         --libdir=%{_lib} \
         --cc=gcc \