diff --git a/nix.spec.in b/nix.spec.in
index 0fe3fb64a..8b367eb55 100644
--- a/nix.spec.in
+++ b/nix.spec.in
@@ -19,7 +19,7 @@ Nix is a software deployment system.
 %setup -q
 
 %build
-./configure --prefix=%{_prefix}
+./configure --prefix=%{_prefix} --with-system="i686-linux"
 make
 make check