diff --git a/include/backtrace/backtrace.h b/include/backtrace/backtrace.h
index 186d327..fa81f21 100644
--- a/include/backtrace/backtrace.h
+++ b/include/backtrace/backtrace.h
@@ -28,8 +28,8 @@
 // thread from the current process will be traced.
 #define BACKTRACE_CURRENT_PROCESS -1
 // When the tid to be traced is set to this value, then trace the specified
-// pid.
-#define BACKTRACE_NO_TID -1
+// current thread of the specified pid.
+#define BACKTRACE_CURRENT_THREAD -1
 
 #define MAX_BACKTRACE_FRAMES 64
 
diff --git a/include/utils/CallStack.h b/include/utils/CallStack.h
index 5836037..bfe2ddb 100644
--- a/include/utils/CallStack.h
+++ b/include/utils/CallStack.h
@@ -44,7 +44,7 @@
 
     // Immediately collect the stack traces for the specified thread.
     // The default is to dump the stack of the current call.
-    void update(int32_t ignoreDepth=1, pid_t tid=BACKTRACE_NO_TID);
+    void update(int32_t ignoreDepth=1, pid_t tid=BACKTRACE_CURRENT_THREAD);
 
     // Dump a stack trace to the log using the supplied logtag.
     void log(const char* logtag,
diff --git a/libbacktrace/Backtrace.cpp b/libbacktrace/Backtrace.cpp
index ccfce81..a7568e0 100644
--- a/libbacktrace/Backtrace.cpp
+++ b/libbacktrace/Backtrace.cpp
@@ -219,12 +219,12 @@
 
 Backtrace* Backtrace::Create(pid_t pid, pid_t tid, backtrace_map_info_t* map_info) {
   if (pid == BACKTRACE_CURRENT_PROCESS || pid == getpid()) {
-    if (tid == BACKTRACE_NO_TID || tid == gettid()) {
+    if (tid == BACKTRACE_CURRENT_THREAD || tid == gettid()) {
       return CreateCurrentObj(map_info);
     } else {
       return CreateThreadObj(tid, map_info);
     }
-  } else if (tid == BACKTRACE_NO_TID) {
+  } else if (tid == BACKTRACE_CURRENT_THREAD) {
     return CreatePtraceObj(pid, pid, map_info);
   } else {
     return CreatePtraceObj(pid, tid, map_info);
diff --git a/libbacktrace/backtrace_test.cpp b/libbacktrace/backtrace_test.cpp
index 2603e1f..b894446 100644
--- a/libbacktrace/backtrace_test.cpp
+++ b/libbacktrace/backtrace_test.cpp
@@ -143,7 +143,8 @@
 void VerifyLevelBacktrace(void*) {
   backtrace_context_t context;
 
-  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS, BACKTRACE_NO_TID, 0));
+  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
+                                       BACKTRACE_CURRENT_THREAD, 0));
 
   VerifyLevelDump(context.backtrace);
 
@@ -165,7 +166,8 @@
 void VerifyMaxBacktrace(void*) {
   backtrace_context_t context;
 
-  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS, BACKTRACE_NO_TID, 0));
+  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
+                                       BACKTRACE_CURRENT_THREAD, 0));
 
   VerifyMaxDump(context.backtrace);
 
@@ -232,15 +234,18 @@
 
 void VerifyLevelIgnoreFrames(void*) {
   backtrace_context_t all;
-  ASSERT_TRUE(backtrace_create_context(&all, BACKTRACE_CURRENT_PROCESS, BACKTRACE_NO_TID, 0));
+  ASSERT_TRUE(backtrace_create_context(&all, BACKTRACE_CURRENT_PROCESS,
+                                       BACKTRACE_CURRENT_THREAD, 0));
   ASSERT_TRUE(all.backtrace != NULL);
 
   backtrace_context_t ign1;
-  ASSERT_TRUE(backtrace_create_context(&ign1, BACKTRACE_CURRENT_PROCESS, BACKTRACE_NO_TID, 1));
+  ASSERT_TRUE(backtrace_create_context(&ign1, BACKTRACE_CURRENT_PROCESS,
+                                       BACKTRACE_CURRENT_THREAD, 1));
   ASSERT_TRUE(ign1.backtrace != NULL);
 
   backtrace_context_t ign2;
-  ASSERT_TRUE(backtrace_create_context(&ign2, BACKTRACE_CURRENT_PROCESS, BACKTRACE_NO_TID, 2));
+  ASSERT_TRUE(backtrace_create_context(&ign2, BACKTRACE_CURRENT_PROCESS,
+                                       BACKTRACE_CURRENT_THREAD, 2));
   ASSERT_TRUE(ign2.backtrace != NULL);
 
   VerifyIgnoreFrames(all.backtrace, ign1.backtrace, ign2.backtrace,
@@ -296,7 +301,7 @@
     ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
     exit(1);
   }
-  VerifyProcTest(pid, BACKTRACE_NO_TID, ReadyLevelBacktrace, VerifyLevelDump);
+  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyLevelBacktrace, VerifyLevelDump);
 
   kill(pid, SIGKILL);
   int status;
@@ -309,7 +314,7 @@
     ASSERT_NE(test_recursive_call(MAX_BACKTRACE_FRAMES+10, NULL, NULL), 0);
     exit(1);
   }
-  VerifyProcTest(pid, BACKTRACE_NO_TID, ReadyMaxBacktrace, VerifyMaxDump);
+  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyMaxBacktrace, VerifyMaxDump);
 
   kill(pid, SIGKILL);
   int status;
@@ -320,11 +325,11 @@
   pid_t pid = bt_all->pid;
 
   backtrace_context_t ign1;
-  ASSERT_TRUE(backtrace_create_context(&ign1, pid, BACKTRACE_NO_TID, 1));
+  ASSERT_TRUE(backtrace_create_context(&ign1, pid, BACKTRACE_CURRENT_THREAD, 1));
   ASSERT_TRUE(ign1.backtrace != NULL);
 
   backtrace_context_t ign2;
-  ASSERT_TRUE(backtrace_create_context(&ign2, pid, BACKTRACE_NO_TID, 2));
+  ASSERT_TRUE(backtrace_create_context(&ign2, pid, BACKTRACE_CURRENT_THREAD, 2));
   ASSERT_TRUE(ign2.backtrace != NULL);
 
   VerifyIgnoreFrames(bt_all, ign1.backtrace, ign2.backtrace, NULL);
@@ -339,7 +344,7 @@
     ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
     exit(1);
   }
-  VerifyProcTest(pid, BACKTRACE_NO_TID, ReadyLevelBacktrace, VerifyProcessIgnoreFrames);
+  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyLevelBacktrace, VerifyProcessIgnoreFrames);
 
   kill(pid, SIGKILL);
   int status;
@@ -614,10 +619,12 @@
 TEST(libbacktrace, format_test) {
   backtrace_context_t context;
 
-  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS, BACKTRACE_NO_TID, 0));
+  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
+                                       BACKTRACE_CURRENT_THREAD, 0));
   ASSERT_TRUE(context.backtrace != NULL);
 
-  backtrace_frame_data_t* frame = const_cast<backtrace_frame_data_t*>(&context.backtrace->frames[1]);
+  backtrace_frame_data_t* frame =
+      const_cast<backtrace_frame_data_t*>(&context.backtrace->frames[1]);
   backtrace_frame_data_t save_frame = *frame;
 
   memset(frame, 0, sizeof(backtrace_frame_data_t));