diff --git a/fakechroot.spec b/fakechroot.spec
index 9bed8b2..4b9eb79 100644
--- a/fakechroot.spec
+++ b/fakechroot.spec
@@ -37,7 +37,7 @@ chmod -x scripts/{relocatesymlinks,restoremode,savemode}.sh
 
 %build
 autoreconf -vfi
-%if %{__isa_bits} == 64
+%if 0%{__isa_bits} == 64
 %configure --disable-static --disable-silent-rules --with-libpath="%{_libdir}/fakechroot:/usr/lib/fakechroot"
 %else
 %configure --disable-static --disable-silent-rules --with-libpath="%{_libdir}/fakechroot"