diff --git a/h_malloc.c b/h_malloc.c
index 04aba7c..73bfeaa 100644
--- a/h_malloc.c
+++ b/h_malloc.c
@@ -1421,6 +1421,7 @@ EXPORT void *h_aligned_alloc(size_t alignment, size_t size) {
 
 EXPORT void *h_memalign(size_t alignment, size_t size) ALIAS(h_aligned_alloc);
 
+#ifndef __ANDROID__
 EXPORT void *h_valloc(size_t size) {
     init();
     thread_unseal_metadata();
@@ -1443,6 +1444,7 @@ EXPORT void *h_pvalloc(size_t size) {
     thread_seal_metadata();
     return p;
 }
+#endif
 
 EXPORT void h_free(void *p) {
     if (p == NULL) {
diff --git a/h_malloc.h b/h_malloc.h
index 81c4fbc..720b689 100644
--- a/h_malloc.h
+++ b/h_malloc.h
@@ -69,8 +69,10 @@ int h_malloc_info(int options, FILE *fp);
 
 // obsolete glibc extensions
 void *h_memalign(size_t alignment, size_t size);
+#ifndef __ANDROID__
 void *h_valloc(size_t size);
 void *h_pvalloc(size_t size);
+#endif
 #ifdef __GLIBC__
 void h_cfree(void *ptr);
 void *h_malloc_get_state(void);