diff --git a/i18n/ja.ftl b/i18n/ja.ftl
index d5955c6609..72498bc2e1 100644
--- a/i18n/ja.ftl
+++ b/i18n/ja.ftl
@@ -4,6 +4,6 @@ bibliography-et-al = et al.
 
 bibliography-translated-by = { $name }
 
-book-chapter-post =  章
+book-chapter-title = 第 { $number } 章
 
 tableofcontents-title = 目次
diff --git a/languages/ja.lua b/languages/ja.lua
index fc01df1899..4e670e6536 100644
--- a/languages/ja.lua
+++ b/languages/ja.lua
@@ -179,7 +179,6 @@ return {
     SILE.hyphenator.languages.ja = { patterns={} }
 
     SILE.registerCommand("book:chapter:post:ja", function (_, _)
-      SILE.call("fluent", {}, { "book-chapter-post" })
       SILE.call("medskip")
     end, nil, nil, true)
 
diff --git a/tests/bug-990.expected b/tests/bug-990.expected
index abe5010fc8..79c7bc9b77 100644
--- a/tests/bug-990.expected
+++ b/tests/bug-990.expected
@@ -12,20 +12,21 @@ T	36 75 82 77 w=41.9912	(Ahoj)
 Mx 	72.5418
 T	86 89 629 87 72 w=47.2441	(světe)
 Mx 	24.7039
-My 	126.5222
+My 	124.9953
 Set font 	Noto Sans CJK JP;22;800;;normal;;LTR
 T	29804 w=22.0000	(第)
-Mx 	46.7326
+Mx 	46.7327
 Mx 	2.4640
 T	1 a=4.9280	( )
+Mx 	49.2254
 T	19 w=12.2100	(2)
-Mx 	61.4066
+Mx 	61.4641
 Mx 	4.4000
 T	1 a=4.9280	( )
-Mx 	65.8354
+Mx 	65.8928
 T	29653 w=22.0000	(章)
 Mx 	24.7039
-My 	152.7062
+My 	151.1793
 Mx 	14.0360
 T	44 a=14.2120	(K)
 Mx 	38.7475
@@ -58,23 +59,23 @@ T	66 w=12.4080	(a)
 Mx 	205.6188
 T	74 w=6.0500	(i)
 Mx 	24.7039
-My 	191.1062
+My 	181.1157
 Set font 	Gentium Plus;22;800;;normal;;LTR
 T	37 124 79 129 80 w=58.4482	(Bölüm)
 Mx 	89.0038
 T	22 w=10.3232	(3)
 Mx 	24.7039
-My 	209.0789
+My 	199.0884
 T	54 72 79 68 80 w=54.3662	(Selam)
 Mx 	84.9113
 T	39 129 81 92 68 w=57.7822	(Dünya)
 Mx 	24.7039
-My 	247.4789
+My 	234.1099
 T	38 75 68 83 87 72 85 w=72.1338	(Chapter)
 Mx 	102.6860
 T	23 w=10.3232	(4)
 Mx 	24.7039
-My 	270.2855
+My 	256.9165
 T	43 72 79 79 82 w=47.5342	(Hello)
 Mx 	78.0813
 T	58 82 85 79 71 w=55.8809	(World)