diff --git a/src/build/build_options.c b/src/build/build_options.c
index 3e6b46c65..09f798d35 100644
--- a/src/build/build_options.c
+++ b/src/build/build_options.c
@@ -486,7 +486,7 @@ static void parse_option(BuildOptions *options)
 		case 'h':
 			break;
 		case 'z':
-			if (match_shortopt("U"))
+			if (match_shortopt("z"))
 			{
 				if (at_end()) error_exit("error: -z needs a value.");
 				add_linker_arg(options, next_arg());
diff --git a/src/version.h b/src/version.h
index 262ca2839..9c46508be 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define COMPILER_VERSION "0.4.687"
+#define COMPILER_VERSION "0.4.688"