Buildify.
diff --git a/third_party/zlib.BUILD b/third_party/zlib.BUILD
index 323c286..7879a81 100644
--- a/third_party/zlib.BUILD
+++ b/third_party/zlib.BUILD
@@ -1,37 +1,36 @@
 cc_library(
-  name = "z",
-  linkstatic = 1,
-  srcs = [
-    'adler32.c',
-    'compress.c',
-    'crc32.c',
-    'deflate.c',
-    'infback.c',
-    'inffast.c',
-    'inflate.c',
-    'inftrees.c',
-    'trees.c',
-    'uncompr.c',
-    'zutil.c',
-  ],
-  hdrs = [
-    'crc32.h',
-    'deflate.h',
-    'gzguts.h',
-    'inffast.h',
-    'inffixed.h',
-    'inflate.h',
-    'inftrees.h',
-    'trees.h',
-    'zconf.h',
-    'zlib.h',
-    'zutil.h',
-  ],
-  includes = [
-      'include',
-  ],
-  visibility = [
-    "//visibility:public",
-  ],
+    name = "z",
+    srcs = [
+        "adler32.c",
+        "compress.c",
+        "crc32.c",
+        "deflate.c",
+        "infback.c",
+        "inffast.c",
+        "inflate.c",
+        "inftrees.c",
+        "trees.c",
+        "uncompr.c",
+        "zutil.c",
+    ],
+    hdrs = [
+        "crc32.h",
+        "deflate.h",
+        "gzguts.h",
+        "inffast.h",
+        "inffixed.h",
+        "inflate.h",
+        "inftrees.h",
+        "trees.h",
+        "zconf.h",
+        "zlib.h",
+        "zutil.h",
+    ],
+    includes = [
+        "include",
+    ],
+    linkstatic = 1,
+    visibility = [
+        "//visibility:public",
+    ],
 )
-