diff --git a/htdocs/langs/pl_PL/main.lang b/htdocs/langs/pl_PL/main.lang
index edc327913a3..4cc0afc76c2 100644
--- a/htdocs/langs/pl_PL/main.lang
+++ b/htdocs/langs/pl_PL/main.lang
@@ -8,12 +8,12 @@ FONTFORPDF=DejaVuSans
 FONTSIZEFORPDF=10
 SeparatorDecimal=,
 SeparatorThousand=Space
-FormatDateShort=%d-%m-%r
-FormatDateShortInput=%d-%m-%r
-FormatDateShortJava=dd-MM-rrrr
-FormatDateShortJavaInput=dd-MM-rrrr
-FormatDateShortJQuery=dd-mm-rr
-FormatDateShortJQueryInput=dd-mm-rr
+FormatDateShort=%d-%m-%Y
+FormatDateShortInput=%d-%m-%Y
+FormatDateShortJava=dd-MM-yyyy
+FormatDateShortJavaInput=dd-MM-yyyy
+FormatDateShortJQuery=dd-mm-yy
+FormatDateShortJQueryInput=dd-mm-yy
 FormatHourShortJQuery=HH:MM
 FormatHourShort=%I:%M %p
 FormatHourShortDuration=%H:%M