diff --git a/llvm.spec b/llvm.spec
index 4e09501..733ca3b 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -232,6 +232,7 @@ rm -rf ../projects/compiler-rt
 %endif
 %ifarch s390x
 %define host_triple s390x-suse-linux
+sed -i s,'${CMAKE_SYSTEM_PROCESSOR}','"SystemZ"',g ../cmake/modules/AddLLVM.cmake
 %endif
 
 cmake -G "Unix Makefiles" \