diff --git a/libc-test/src/functional/test-mallopt.c b/libc-test/src/functional/test-mallopt.c
index 4a9e5c4289ec27f6bc2da6527a2e4a7047749640..35d6e08e5b6e126ed78003aaf288a1bff0658fa1 100644
--- a/libc-test/src/functional/test-mallopt.c
+++ b/libc-test/src/functional/test-mallopt.c
@@ -18,7 +18,7 @@
 
 static int test_mallopt()
 {
-	return mallopt(0, 0) != 0;
+	return mallopt(0, 0) == 0;
 }
 
 int main()
diff --git a/ndk_musl_include/malloc.h b/ndk_musl_include/malloc.h
index 09c9f22506be0f0ec07281fbdea02a20ef795523..003d9197172b50454d91d1381b1e90cddbecd0d3 100644
--- a/ndk_musl_include/malloc.h
+++ b/ndk_musl_include/malloc.h
@@ -9,6 +9,16 @@ extern "C" {
 
 #include <bits/alltypes.h>
 
+#define M_SET_THREAD_CACHE -1001
+#define M_THREAD_CACHE_ENABLE 1
+#define M_THREAD_CACHE_DISABLE 0
+
+#define M_FLUSH_THREAD_CACHE -1002
+
+#define M_DELAYED_FREE -1003
+#define M_DELAYED_FREE_ENABLE 1
+#define M_DELAYED_FREE_DISABLE 0
+
 void *malloc (size_t);
 void *calloc (size_t, size_t);
 void *realloc (void *, size_t);
@@ -17,6 +27,7 @@ void *valloc (size_t);
 void *memalign(size_t, size_t);
 
 size_t malloc_usable_size(void *);
+int mallopt(int param, int value);
 
 struct mallinfo {
   int arena;
diff --git a/ndk_script/adapter/libc.ndk.json b/ndk_script/adapter/libc.ndk.json
index 5fa6bc830217eb5f67e2d1688fdd709dc94fd79e..d65516125ee833194597d87af2c5f2128f533687 100644
--- a/ndk_script/adapter/libc.ndk.json
+++ b/ndk_script/adapter/libc.ndk.json
@@ -736,6 +736,7 @@
     { "name": "lutimes" },
     { "name": "madvise" },
     { "name": "malloc" },
+    { "name": "mallopt" },
     { "name": "malloc_usable_size" },
     { "name": "mblen" },
     { "name": "mbrlen" },