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-rw-r--r--haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs b/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
index 1901cf05..edab4b16 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
@@ -182,7 +182,7 @@ hackMarkup fmt' currPkg h' =
UntouchedDoc d -> (markup fmt $ _doc d, [_meta d])
CollapsingHeader (Header lvl titl) par n nm ->
let id_ = makeAnchorId $ "ch:" ++ fromMaybe "noid:" nm ++ show n
- col' = collapseControl id_ "caption"
+ col' = collapseControl id_ "subheading"
summary = thesummary ! [ theclass "hide-when-js-enabled" ] << "Expand"
instTable contents = collapseDetails id_ DetailsClosed (summary +++ contents)
lvs = zip [1 .. ] [h1, h2, h3, h4, h5, h6]