diff --git a/lib/libc/mingw/math/roundl.c b/lib/libc/mingw/math/roundl.c
deleted file mode 100644
index 9879a82cc2..0000000000
--- a/lib/libc/mingw/math/roundl.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is part of the mingw-w64 runtime package.
- * No warranty is given; refer to the file DISCLAIMER.PD within this package.
- */
-#include <math.h>
-
-long double
-roundl (long double x)
-{
-  long double res = 0.0L;
-  if (x >= 0.0L)
-    {
-      res = ceill (x);
-      if (res - x > 0.5L)
-	res -= 1.0L;
-    }
-  else
-    {
-      res = ceill (-x);
-      if (res + x > 0.5L)
-	res -= 1.0L;
-      res = -res;
-    }
-  return res;
-}
diff --git a/lib/libc/musl/src/math/s390x/roundl.c b/lib/libc/musl/src/math/s390x/roundl.c
deleted file mode 100644
index ce644ddd79..0000000000
--- a/lib/libc/musl/src/math/s390x/roundl.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if defined(__HTM__) || __ARCH__ >= 9
-
-long double roundl(long double x)
-{
-	__asm__ ("fixbra %0, 1, %1, 4" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../roundl.c"
-
-#endif
diff --git a/src/libs/mingw.zig b/src/libs/mingw.zig
index 8f20b8cd0b..568dd94551 100644
--- a/src/libs/mingw.zig
+++ b/src/libs/mingw.zig
@@ -936,7 +936,6 @@ const mingw32_x86_src = [_][]const u8{
     "math" ++ path.sep_str ++ "lrintl.c",
     "math" ++ path.sep_str ++ "lroundl.c",
     "math" ++ path.sep_str ++ "rintl.c",
-    "math" ++ path.sep_str ++ "roundl.c",
     "math" ++ path.sep_str ++ "tgammal.c",
     "math" ++ path.sep_str ++ "x86" ++ path.sep_str ++ "_chgsignl.S",
     "math" ++ path.sep_str ++ "x86" ++ path.sep_str ++ "acoshl.c",
diff --git a/src/libs/musl.zig b/src/libs/musl.zig
index 28602cd6f6..c6bdac314c 100644
--- a/src/libs/musl.zig
+++ b/src/libs/musl.zig
@@ -1023,7 +1023,6 @@ const src_files = [_][]const u8{
     "musl/src/math/riscv64/fmaf.c",
     "musl/src/math/round.c",
     "musl/src/math/roundf.c",
-    "musl/src/math/roundl.c",
     "musl/src/math/s390x/fma.c",
     "musl/src/math/s390x/fmaf.c",
     "musl/src/math/s390x/nearbyint.c",
@@ -1034,7 +1033,6 @@ const src_files = [_][]const u8{
     "musl/src/math/s390x/rintl.c",
     "musl/src/math/s390x/round.c",
     "musl/src/math/s390x/roundf.c",
-    "musl/src/math/s390x/roundl.c",
     "musl/src/math/scalb.c",
     "musl/src/math/scalbf.c",
     "musl/src/math/scalbln.c",
diff --git a/src/libs/wasi_libc.zig b/src/libs/wasi_libc.zig
index b1a1159778..19b820eef9 100644
--- a/src/libs/wasi_libc.zig
+++ b/src/libs/wasi_libc.zig
@@ -810,7 +810,6 @@ const libc_top_half_src_files = [_][]const u8{
     "musl/src/math/rintl.c",
     "musl/src/math/round.c",
     "musl/src/math/roundf.c",
-    "musl/src/math/roundl.c",
     "musl/src/math/scalb.c",
     "musl/src/math/scalbf.c",
     "musl/src/math/scalbln.c",
diff --git a/test/libc.zig b/test/libc.zig
index e1d866eb3d..ee73434930 100644
--- a/test/libc.zig
+++ b/test/libc.zig
@@ -298,7 +298,7 @@ pub fn addCases(cases: *tests.LibcContext) void {
     // cases.addLibcTestCase("math/rintl.c", true, .{});
     // cases.addLibcTestCase("math/round.c", true, .{});
     // cases.addLibcTestCase("math/roundf.c", true, .{});
-    // cases.addLibcTestCase("math/roundl.c", true, .{});
+    cases.addLibcTestCase("math/roundl.c", true, .{});
     cases.addLibcTestCase("math/scalb.c", true, .{});
     cases.addLibcTestCase("math/scalbf.c", true, .{});
     cases.addLibcTestCase("math/scalbln.c", true, .{});