diff --git a/hledger-lib/Hledger/Data/Period.hs b/hledger-lib/Hledger/Data/Period.hs
index c158f458e..45f126561 100644
--- a/hledger-lib/Hledger/Data/Period.hs
+++ b/hledger-lib/Hledger/Data/Period.hs
@@ -122,7 +122,7 @@ isLastDayOfMonth y m d =
 --
 -- >>> showPeriod (WeekPeriod (fromGregorian 2016 7 25))
 -- "2016/07/25w30"
-showPeriod (DayPeriod b)       = formatTime defaultTimeLocale "%0C%y/%m/%dd" b    -- DATEd
+showPeriod (DayPeriod b)       = formatTime defaultTimeLocale "%0C%y/%m/%d" b     -- DATE
 showPeriod (WeekPeriod b)      = formatTime defaultTimeLocale "%0C%y/%m/%dw%V" b  -- STARTDATEwYEARWEEK
 showPeriod (MonthPeriod y m)   = printf "%04d/%02d" y m                           -- YYYY/MM
 showPeriod (QuarterPeriod y q) = printf "%04dq%d" y q                             -- YYYYqN
diff --git a/tests/register/depth.test b/tests/register/depth.test
index 77bd3aa4f..365461d16 100644
--- a/tests/register/depth.test
+++ b/tests/register/depth.test
@@ -43,8 +43,8 @@ hledger -f - register aa --depth 1 --daily
   a:aa      1
   b:bb:bbb
 >>>
-2010/01/01d             a                                        2             2
-2010/01/02d             a                                        1             3
+2010/01/01              a                                        2             2
+2010/01/02              a                                        1             3
 >>>=0
 
 # 4. with --cleared
@@ -75,7 +75,7 @@ hledger -f - register --depth 0 --daily a b
   b:bb      2
   c:cc
 >>>
-2010/01/01d             ...                                      6             6
-2010/01/02d             ...                                      3             9
+2010/01/01              ...                                      6             6
+2010/01/02              ...                                      3             9
 >>>=0