diff --git a/heka/files/lua/common/influxdb.lua b/heka/files/lua/common/influxdb.lua
index 9341399..889c1a0 100644
--- a/heka/files/lua/common/influxdb.lua
+++ b/heka/files/lua/common/influxdb.lua
@@ -67,7 +67,7 @@
 
 -- Create a new InfluxDB encoder
 --
--- time_precision: "s", "m", "ms", "us" or "ns" (default: "ns")
+-- time_precision: "s", "m", "ms", "u" or "ns" (default: "ns")
 function InfluxEncoder.new(time_precision)
     local e = {}
     setmetatable(e, InfluxEncoder)
diff --git a/heka/files/lua/common/lma_utils.lua b/heka/files/lua/common/lma_utils.lua
index 0ceeff6..7488ba4 100644
--- a/heka/files/lua/common/lma_utils.lua
+++ b/heka/files/lua/common/lma_utils.lua
@@ -265,7 +265,7 @@
 
 -- Convert a nanosecond timestamp to a lower precision timestamp.
 -- Arguments:
---   timestamp_precision: one of 'us', 'ms', 's', 'm' or 'h'.
+--   timestamp_precision: one of 'u', 'ms', 's', 'm' or 'h'.
 --   timestamp: a timestamp in nanosecond, if not provided the message Timestamp is used.
 function message_timestamp(timestamp_precision, timestamp)
     -- Default is to divide ns to ms
@@ -274,7 +274,7 @@
     if timestamp_precision == "s" then
         timestamp_divisor = 1e9
     -- Divide ns to us
-    elseif timestamp_precision == "us" then
+    elseif timestamp_precision == "u" then
         timestamp_divisor = 1e3
     -- Divide ns to m
     elseif timestamp_precision == "m" then