diff --git a/share/timedef/pl_PL.ISO8859-2.src b/share/timedef/pl_PL.ISO8859-2.src
index d031a63ddc1..c1b3cd9484e 100644
--- a/share/timedef/pl_PL.ISO8859-2.src
+++ b/share/timedef/pl_PL.ISO8859-2.src
@@ -32,12 +32,12 @@ grudnia
 #
 # Short weekday names
 #
-ndz
+nie
 pon
 wto
 ¶ro
 czw
-ptk
+pi±
 sob
 #
 # Long weekday names
diff --git a/share/timedef/pl_PL.UTF-8.src b/share/timedef/pl_PL.UTF-8.src
index 7e7b1120c8e..1a8e27aeb5c 100644
--- a/share/timedef/pl_PL.UTF-8.src
+++ b/share/timedef/pl_PL.UTF-8.src
@@ -32,12 +32,12 @@ grudnia
 #
 # Short weekday names
 #
-ndz
+nie
 pon
 wto
 śro
 czw
-ptk
+piÄ…
 sob
 #
 # Long weekday names