diff --git a/src/libs/mingw.zig b/src/libs/mingw.zig
index acad93b970d894e87baa872e4d27e2d978c6e583..85fc522385b20722409be62ce7688d7b6b27588d 100644
--- a/src/libs/mingw.zig
+++ b/src/libs/mingw.zig
@@ -135,8 +135,6 @@ pub fn buildCrtFile(comp: *Compilation, crt_file: CrtFile, prog_node: std.Progre
                 try addCcArgs(comp, arena, &winpthreads_args);
                 try winpthreads_args.appendSlice(&[_][]const u8{
                     "-DIN_WINPTHREAD",
-                    // winpthreads incorrectly assumes that Clang has `-Wprio-ctor-dtor`.
-                    "-Wno-unknown-warning-option",
                 });
 
                 switch (comp.compilerRtOptMode()) {
@@ -170,6 +168,7 @@ fn addCcArgs(
     args: *std.array_list.Managed([]const u8),
 ) error{OutOfMemory}!void {
     try args.appendSlice(&[_][]const u8{
+        "-w", // Disable all warnings.
         "-std=gnu11",
         "-D__USE_MINGW_ANSI_STDIO=0",