diff --git a/localedata/ChangeLog b/localedata/ChangeLog
index 77326408f3..0aa20710ab 100644
--- a/localedata/ChangeLog
+++ b/localedata/ChangeLog
@@ -1,3 +1,8 @@
+2016-05-07  Dimitris Pappas  <dvpappas@msn.com>
+
+	[BZ #18453]
+	* charmaps/IBM875: Swap ΐ/ϊ and ΰ/ϋ places.
+
 2016-05-01  Arnas Udovičius <arnas.udovicius@gmail.com>
 
 	[BZ #12450]
diff --git a/localedata/charmaps/IBM875 b/localedata/charmaps/IBM875
index 7bacde6266..5f39e7c6ed 100644
--- a/localedata/charmaps/IBM875
+++ b/localedata/charmaps/IBM875
@@ -186,11 +186,11 @@ CHARMAP
 <U03AC>     /xb1         GREEK SMALL LETTER ALPHA WITH TONOS
 <U03AD>     /xb2         GREEK SMALL LETTER EPSILON WITH TONOS
 <U03AE>     /xb3         GREEK SMALL LETTER ETA WITH TONOS
-<U0390>     /xb4         GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS
+<U03CA>     /xb4         GREEK SMALL LETTER IOTA WITH DIALYTIKA
 <U03AF>     /xb5         GREEK SMALL LETTER IOTA WITH TONOS
 <U03CC>     /xb6         GREEK SMALL LETTER OMICRON WITH TONOS
 <U03CD>     /xb7         GREEK SMALL LETTER UPSILON WITH TONOS
-<U03B0>     /xb8         GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS
+<U03CB>     /xb8         GREEK SMALL LETTER UPSILON WITH DIALYTIKA
 <U03CE>     /xb9         GREEK SMALL LETTER OMEGA WITH TONOS
 <U03C2>     /xba         GREEK SMALL LETTER FINAL SIGMA
 <U03C4>     /xbb         GREEK SMALL LETTER TAU
@@ -210,8 +210,8 @@ CHARMAP
 <U0049>     /xc9         LATIN CAPITAL LETTER I
 <U00AD>     /xca         SOFT HYPHEN
 <U03C9>     /xcb         GREEK SMALL LETTER OMEGA
-<U03CA>     /xcc         GREEK SMALL LETTER IOTA WITH DIALYTIKA
-<U03CB>     /xcd         GREEK SMALL LETTER UPSILON WITH DIALYTIKA
+<U0390>     /xcc         GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS
+<U03B0>     /xcd         GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS
 <U2018>     /xce         LEFT SINGLE QUOTATION MARK
 <U2015>     /xcf         HORIZONTAL BAR
 <U007D>     /xd0         RIGHT CURLY BRACKET