diff --git a/deps/llvm.mk b/deps/llvm.mk
index 4f350aa443..3449605f1f 100644
--- a/deps/llvm.mk
+++ b/deps/llvm.mk
@@ -70,6 +70,7 @@ ifeq ($(USE_POLLY_ACC),1)
 LLVM_CMAKE += -DPOLLY_ENABLE_GPGPU_CODEGEN=ON
 endif
 LLVM_CMAKE += -DLLVM_TOOLS_INSTALL_DIR=$(shell $(JULIAHOME)/contrib/relative_path.sh $(build_prefix) $(build_depsbindir))
+LLVM_CMAKE += -DLLVM_LIBDIR_SUFFIX=64
 LLVM_CMAKE += -DLLVM_BINDINGS_LIST="" -DLLVM_INCLUDE_DOCS=Off -DLLVM_ENABLE_TERMINFO=Off -DHAVE_HISTEDIT_H=Off -DHAVE_LIBEDIT=Off
 ifeq ($(LLVM_ASSERTIONS), 1)
 LLVM_CMAKE += -DLLVM_ENABLE_ASSERTIONS:BOOL=ON