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-rw-r--r--haddock-api/src/Haddock/Backends/Xhtml/Decl.hs4
1 files changed, 2 insertions, 2 deletions
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
index 3ac443a4..651060c1 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
@@ -287,9 +287,9 @@ ppTyFam summary associated links instances fixities loc doc decl splice unicode
ppTyFamHeader summary associated decl unicode qual <+> ppFixities fixities qual
instancesBit
- | FamilyDecl { fdInfo = ClosedTypeFamily eqns } <- decl
+ | FamilyDecl { fdInfo = ClosedTypeFamily mb_eqns } <- decl
, not summary
- = subEquations qual $ map (ppTyFamEqn . unLoc) eqns
+ = subEquations qual $ map (ppTyFamEqn . unLoc) $ fromMaybe [] mb_eqns
| otherwise
= ppInstances links (OriginFamily docname) instances splice unicode qual