diff --git a/tests/leak_test.cpp b/tests/leak_test.cpp
index e0a3d57..4ebf41f 100644
--- a/tests/leak_test.cpp
+++ b/tests/leak_test.cpp
@@ -109,23 +109,21 @@
 
 // http://b/36045112
 TEST(pthread_leak, join) {
+  SKIP_WITH_NATIVE_BRIDGE;  // http://b/37920774
+
   LeakChecker lc;
 
-  for (size_t pass = 0; pass < 2; ++pass) {
-    for (int i = 0; i < 100; ++i) {
-      pthread_t thread;
-      ASSERT_EQ(0, pthread_create(&thread, nullptr, [](void*) -> void* { return nullptr; }, nullptr));
-      ASSERT_EQ(0, pthread_join(thread, nullptr));
-    }
-
-    // A native bridge implementation might need a warm up pass to reach a steady state.
-    // http://b/37920774.
-    if (pass == 0) lc.Reset();
+  for (int i = 0; i < 100; ++i) {
+    pthread_t thread;
+    ASSERT_EQ(0, pthread_create(&thread, nullptr, [](void*) -> void* { return nullptr; }, nullptr));
+    ASSERT_EQ(0, pthread_join(thread, nullptr));
   }
 }
 
 // http://b/36045112
 TEST(pthread_leak, detach) {
+  SKIP_WITH_NATIVE_BRIDGE;  // http://b/37920774
+
   LeakChecker lc;
 
   // Ancient devices with only 2 cores need a lower limit.
@@ -158,8 +156,7 @@
 
     WaitUntilAllThreadsExited(tids, thread_count);
 
-    // A native bridge implementation might need a warm up pass to reach a steady state.
-    // http://b/37920774.
+    // TODO(b/158573595): the test is flaky without the warmup pass.
     if (pass == 0) lc.Reset();
   }
 }
diff --git a/tests/utils.h b/tests/utils.h
index a9b8513..c1b7f65 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -26,6 +26,10 @@
 #include <unistd.h>
 
 #if defined(__BIONIC__)
+#include <sys/system_properties.h>
+#endif
+
+#if defined(__BIONIC__)
 #include <bionic/macros.h>
 #else
 #define untag_address(p) p
@@ -72,6 +76,21 @@
 
 #define SKIP_WITH_HWASAN if (running_with_hwasan()) GTEST_SKIP()
 
+static inline bool running_with_native_bridge() {
+#if defined(__BIONIC__)
+#if defined(__arm__)
+  static const prop_info* pi = __system_property_find("ro.dalvik.vm.isa.arm");
+  return pi != nullptr;
+#elif defined(__aarch64__)
+  static const prop_info* pi = __system_property_find("ro.dalvik.vm.isa.arm64");
+  return pi != nullptr;
+#endif
+#endif
+  return false;
+}
+
+#define SKIP_WITH_NATIVE_BRIDGE if (running_with_native_bridge()) GTEST_SKIP()
+
 #if defined(__linux__)
 
 #include <sys/sysmacros.h>