diff --git a/src/support/timestamp.cpp b/src/support/timestamp.cpp
index 39801c62db..8c1711bd7e 100644
--- a/src/support/timestamp.cpp
+++ b/src/support/timestamp.cpp
@@ -91,7 +91,7 @@ static const unsigned long long zerotime_val = zerotime();
 static const unsigned long long offset_val = timestamp();
 static const unsigned long long frequency_val = update_frequency();
 
-unsigned long long NT_Now() {
+unsigned long long nt::Now() {
   assert(offset_val > 0u);
   assert(frequency_val > 0u);
   unsigned long long delta = timestamp() - offset_val;
@@ -100,3 +100,7 @@ unsigned long long NT_Now() {
   unsigned long long delta_in_us = delta * 10000000ull / frequency_val;
   return delta_in_us + zerotime_val;
 }
+
+unsigned long long NT_Now() {
+  return nt::Now();
+}
diff --git a/src/support/timestamp.h b/src/support/timestamp.h
index 1baaf9e413..215aa88429 100644
--- a/src/support/timestamp.h
+++ b/src/support/timestamp.h
@@ -17,4 +17,12 @@ unsigned long long NT_Now(void);
 }
 #endif
 
+#ifdef __cplusplus
+namespace nt {
+
+unsigned long long Now();
+
+}  // namespace nt
+#endif
+
 #endif  // NT_SUPPORT_TIMESTAMP_H_