diff --git a/01/reference.txt b/01/reference.txt
index 9f46bdb7..b50ce5c4 100644
--- a/01/reference.txt
+++ b/01/reference.txt
@@ -1 +1 @@
-Bibliuri ist'oria Dabadebis s'igni 1-2 tavi
\ No newline at end of file
+Bibliuri ist'oria Dabadebis s'igni 1-2
\ No newline at end of file
diff --git a/02/reference.txt b/02/reference.txt
index 65adfa46..93441cc6 100644
--- a/02/reference.txt
+++ b/02/reference.txt
@@ -1 +1 @@
-Bibliuri ist'oria Dabadebis s'igni 3 tavi
\ No newline at end of file
+Bibliuri ist'oria Dabadebis s'igni 3
\ No newline at end of file
diff --git a/03/reference.txt b/03/reference.txt
index f376998c..3e686ea3 100644
--- a/03/reference.txt
+++ b/03/reference.txt
@@ -1 +1 @@
-Bibliuri ist'oria Dabadebis s'igni 6-8 tavi
\ No newline at end of file
+Bibliuri ist'oria Dabadebis s'igni 6-8
\ No newline at end of file
diff --git a/04/reference.txt b/04/reference.txt
index 13d2b75c..3e75e62d 100644
--- a/04/reference.txt
+++ b/04/reference.txt
@@ -1 +1 @@
-Bibliuri ist'oria Dabadebis s'igni 11-15 tavi
\ No newline at end of file
+Bibliuri ist'oria Dabadebis s'igni 11-15
\ No newline at end of file
diff --git a/05/reference.txt b/05/reference.txt
index 99d1c707..f9671173 100644
--- a/05/reference.txt
+++ b/05/reference.txt
@@ -1 +1 @@
-Bibliuri ist'oria Dabadebis s'igni 16-22 tavi
\ No newline at end of file
+Bibliuri ist'oria Dabadebis s'igni 16-22
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index d661cbe3..333a065f 100644
--- a/manifest.json
+++ b/manifest.json
@@ -358,6 +358,7 @@
 		"21-12",
 		"21-13",
 		"21-14",
+		"21-15",
 		"21-reference",
 		"22-title",
 		"22-01",