diff --git a/Package.swift b/Package.swift
index bfde06d42..e5537a52a 100644
--- a/Package.swift
+++ b/Package.swift
@@ -70,8 +70,7 @@ let package = Package(
         .headerSearchPath("src/lib"),
         .headerSearchPath("src/valgrind"),
         .headerSearchPath("src/xxhash"),
-        .define("HAVE_CONFIG_H"),
-        .unsafeFlags(["-w"])
+        .define("HAVE_CONFIG_H")
       ]
     ),
     .target(
diff --git a/Sources/Cfyaml/config.h b/Sources/Cfyaml/config.h
index 2e683640f..e9c4c6601 100644
--- a/Sources/Cfyaml/config.h
+++ b/Sources/Cfyaml/config.h
@@ -239,3 +239,5 @@
 
 /* Define to `int' if <sys/types.h> doesn't define. */
 /* #undef uid_t */
+
+#pragma clang diagnostic ignored "-Wconversion"