diff --git a/share/timedef/ru_RU.CP866.src b/share/timedef/ru_RU.CP866.src
index 0c8a1816c74a..4c46d823289f 100644
--- a/share/timedef/ru_RU.CP866.src
+++ b/share/timedef/ru_RU.CP866.src
@@ -59,7 +59,7 @@
 #
 # x_fmt
 #
-%d.%m.%y
+%d.%m.%Y
 #
 # c_fmt
 #
diff --git a/share/timedef/ru_RU.ISO8859-5.src b/share/timedef/ru_RU.ISO8859-5.src
index e52afaaae207..900b6260a401 100644
--- a/share/timedef/ru_RU.ISO8859-5.src
+++ b/share/timedef/ru_RU.ISO8859-5.src
@@ -59,7 +59,7 @@
 #
 # x_fmt
 #
-%d.%m.%y
+%d.%m.%Y
 #
 # c_fmt
 #
diff --git a/share/timedef/ru_RU.ISO_8859-5.src b/share/timedef/ru_RU.ISO_8859-5.src
index e52afaaae207..900b6260a401 100644
--- a/share/timedef/ru_RU.ISO_8859-5.src
+++ b/share/timedef/ru_RU.ISO_8859-5.src
@@ -59,7 +59,7 @@
 #
 # x_fmt
 #
-%d.%m.%y
+%d.%m.%Y
 #
 # c_fmt
 #
diff --git a/share/timedef/ru_RU.KOI8-R.src b/share/timedef/ru_RU.KOI8-R.src
index bce56a367ba7..c5e69ca17e81 100644
--- a/share/timedef/ru_RU.KOI8-R.src
+++ b/share/timedef/ru_RU.KOI8-R.src
@@ -59,7 +59,7 @@
 #
 # x_fmt
 #
-%d.%m.%y
+%d.%m.%Y
 #
 # c_fmt
 #