diff --git a/Makefile.builder b/Makefile.builder
index 44be931..a8765ce 100644
--- a/Makefile.builder
+++ b/Makefile.builder
@@ -1,4 +1,6 @@
 ifeq ($(PACKAGE_SET),vm)
-RPM_SPEC_FILES := rpm_spec/core-vm-doc.spec rpm_spec/core-vm-kernel-placeholder.spec rpm_spec/core-vm.spec
+RPM_SPEC_FILES := rpm_spec/core-vm.spec \
+    rpm_spec/core-vm-doc.spec \
+    rpm_spec/core-vm-kernel-placeholder.spec
 ARCH_BUILD_DIRS := archlinux
 endif