diff --git a/test/core/test_float_builtins.c b/test/core/test_float_builtins.c
index 2bff43a6f176e..4af9e6d82b337 100644
--- a/test/core/test_float_builtins.c
+++ b/test/core/test_float_builtins.c
@@ -34,6 +34,7 @@ int test_builtins() {
   TEST(fmin)
   TEST(fmod)
   TEST(scalbn)
+  TEST(scalbnl)
   TEST(ldexp)
 
   TEST(pow)
diff --git a/tools/system_libs.py b/tools/system_libs.py
index 57a9f0315a583..ba2d6d443e2a2 100644
--- a/tools/system_libs.py
+++ b/tools/system_libs.py
@@ -1123,7 +1123,7 @@ def get_libcall_files(self):
       '__math_uflow.c', '__math_uflowf.c',
       '__math_invalid.c', '__math_invalidf.c', '__math_invalidl.c',
       'pow.c', 'pow_data.c', 'log.c', 'log_data.c', 'log2.c', 'log2_data.c',
-      'scalbnf.c',
+      'scalbnf.c', 'scalbnl.c',
     ]
     math_files = files_in_path(path='system/lib/libc/musl/src/math', filenames=math_files)