diff --git a/share/monetdef/pt_PT.ISO8859-1.src b/share/monetdef/pt_PT.ISO8859-1.src
index e729d54eb00..23c0fcdfded 100644
--- a/share/monetdef/pt_PT.ISO8859-1.src
+++ b/share/monetdef/pt_PT.ISO8859-1.src
@@ -7,8 +7,8 @@
 EUR 
 # currency_symbol
 Eu
-# mon_decimal_point (possibly incorrect for pt_PT)
-.
+# mon_decimal_point
+,
 # mon_thousands_sep
 .
 # mon_grouping, separated by ;