diff --git a/src/os_macosx.c b/src/os_macosx.c
index d361958..8e9d55d 100644
--- a/src/os_macosx.c
+++ b/src/os_macosx.c
@@ -85,6 +85,7 @@
 	{"iso-8859-8", kTextEncodingISOLatinHebrew},
 	{"iso-8859-9", kTextEncodingISOLatin5},
 	{"iso-8859-10", kTextEncodingISOLatin6},
+	{"iso-8859-15", kTextEncodingISOLatin9},
 
 	/* Unicode encodings. */
 	/* TODO: Add other type of unicode */