diff --git a/Formula/ugs.rb b/Formula/ugs.rb
index 212e3670..a5c6c038 100644
--- a/Formula/ugs.rb
+++ b/Formula/ugs.rb
@@ -4,7 +4,6 @@ class Ugs < Formula
   url "https://ftp.riken.jp/iris/ugs/ugs.tar.gz"
   version "2.10e"
   sha256 "27bc46e975917bdf149e9ff6997885ffa24b0b1416bdf82ffaea5246b36e1f83"
-  revision 1
 
   livecheck do
     skip "No version information available"
@@ -32,8 +31,13 @@ class Ugs < Formula
   end
 
   def install
-    inreplace "src/aux.c", "#include <stdlib.h>\n", "#include <stdlib.h>\n#include <string.h>\n"
-    inreplace "src/drivers/rotated.c", "#include <stdio.h>\n", "#include <stdlib.h>\n#include <stdio.h>\n#include <string.h>\n"
+    # fix compiler errors
+    inreplace "src/aux.c",
+      "#include <stdlib.h>\n",
+      "#include <stdlib.h>\n#include <string.h>\n"
+    inreplace "src/drivers/rotated.c",
+      "#include <stdio.h>\n",
+      "#include <stdlib.h>\n#include <stdio.h>\n#include <string.h>\n"
 
     ENV.deparallelize