diff --git a/libdrm.spec b/libdrm.spec
index 43ce70a..bc25d4b 100644
--- a/libdrm.spec
+++ b/libdrm.spec
@@ -262,7 +262,7 @@ export CFLAGS="%{optflags} -fno-strict-aliasing"
 # patch the generated pkgconfig files to not have a dependency on valgrind
 # intentionally using a patch file to catch if we need to adjust
 pushd %{buildroot}%{_libdir}/pkgconfig
-echo "arch: %arch"
+echo "arch: %_arch"
 %ifnarch armv7l
 patch -p1 --no-backup-if-mismatch < %{SOURCE3}
 %ifnarch s390x