5 files changed, 5 insertions, 4 deletions
diff --git a/src/features/ccmp.fea b/src/features/ccmp.fea
index 4fae01825..f97a76558 100644
--- a/src/features/ccmp.fea
+++ b/src/features/ccmp.fea
@@ -30,6 +30,7 @@
 # /idieresis /idieresis -> /idieresis.double
 lookup idieresis_double {
   sub [idieresis yi-cy] [idieresis yi-cy] by idieresis.double;
+  sub [Idieresis Yi-cy] [Idieresis Yi-cy] by Idieresis.double;
 } idieresis_double;
 
 # Transpose sequences like /i /gravecomb -> /idotless /gravecomb
diff --git a/src/features/cv08-i-serif.fea b/src/features/cv08-i-serif.fea
index 954e7e29e..cc46a307f 100644
--- a/src/features/cv08-i-serif.fea
+++ b/src/features/cv08-i-serif.fea
@@ -30,4 +30,4 @@ sub uni1FD9 by uni1FD9.1;
 sub uni1FDA by uni1FDA.1;
 sub uni1FDB by uni1FDB.1;
 sub afii10055 by afii10055.1;
-sub afii10056 by afii10056.1;
+sub Yi-cy by Yi-cy.1;
diff --git a/src/features/salt.fea b/src/features/salt.fea
index 4fda36cc5..2f27744f6 100644
--- a/src/features/salt.fea
+++ b/src/features/salt.fea
@@ -106,4 +106,4 @@ sub uni1FD9 by uni1FD9.1;
 sub uni1FDA by uni1FDA.1;
 sub uni1FDB by uni1FDB.1;
 sub afii10055 by afii10055.1;
-sub afii10056 by afii10056.1;
+sub Yi-cy by Yi-cy.1;
diff --git a/src/features/ss02-disambiguation.fea b/src/features/ss02-disambiguation.fea
index 6eeccbe3b..d8fe40816 100644
--- a/src/features/ss02-disambiguation.fea
+++ b/src/features/ss02-disambiguation.fea
@@ -54,7 +54,7 @@ sub uni1FD9 by uni1FD9.1;
 sub uni1FDA by uni1FDA.1;
 sub uni1FDB by uni1FDB.1;
 sub afii10055 by afii10055.1;
-sub afii10056 by afii10056.1;
+sub Yi-cy by Yi-cy.1;
 
 # zero
 sub zero by zero.slash;
diff --git a/src/features/ss04-disambiguation.fea b/src/features/ss04-disambiguation.fea
index 40b64a8fa..755dbaf95 100644
--- a/src/features/ss04-disambiguation.fea
+++ b/src/features/ss04-disambiguation.fea
@@ -52,4 +52,4 @@ sub uni1FD9 by uni1FD9.1;
 sub uni1FDA by uni1FDA.1;
 sub uni1FDB by uni1FDB.1;
 sub afii10055 by afii10055.1;
-sub afii10056 by afii10056.1;
+sub Yi-cy by Yi-cy.1;