diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 5b6e953484369..09036b8221353 100644
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -158,7 +158,7 @@ impl Step for Llvm {
             .define("LLVM_INCLUDE_TESTS", "OFF")
             .define("LLVM_INCLUDE_DOCS", "OFF")
             .define("LLVM_INCLUDE_BENCHMARKS", "OFF")
-            .define("LLVM_ENABLE_ZLIB", "OFF")
+            .define("LLVM_ENABLE_ZLIB", "ON")
             .define("WITH_POLLY", "OFF")
             .define("LLVM_ENABLE_TERMINFO", "OFF")
             .define("LLVM_ENABLE_LIBEDIT", "OFF")