diff --git a/src/libartbase/base/mem_map.cc b/src/libartbase/base/mem_map.cc
index e044890..d6e7e16 100644
--- a/src/libartbase/base/mem_map.cc
+++ b/src/libartbase/base/mem_map.cc
@@ -120,7 +120,7 @@ static constexpr uintptr_t LOW_MEM_START = 64 * KB;
 // do not have Bionic, simply start with LOW_MEM_START.
 
 // Function is standalone so it can be tested somewhat in mem_map_test.cc.
-#ifdef __BIONIC__
+#if defined(__BIONIC__) && !defined(__ANDROID_NDK__)
 uintptr_t CreateStartPos(uint64_t input, size_t page_size) {
   CHECK_NE(0, ART_BASE_ADDRESS);
 
@@ -137,7 +137,7 @@ uintptr_t CreateStartPos(uint64_t input, size_t page_size) {
 #endif
 
 static uintptr_t GenerateNextMemPos(size_t page_size) {
-#ifdef __BIONIC__
+#if defined(__BIONIC__) && !defined(__ANDROID_NDK__)
   uint64_t random_data;
   arc4random_buf(&random_data, sizeof(random_data));
   return CreateStartPos(random_data, page_size);