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-rw-r--r--tex/context/base/mkxl/strc-mat.mkxl4
1 files changed, 3 insertions, 1 deletions
diff --git a/tex/context/base/mkxl/strc-mat.mkxl b/tex/context/base/mkxl/strc-mat.mkxl
index 7efae6a8b..e5eaab435 100644
--- a/tex/context/base/mkxl/strc-mat.mkxl
+++ b/tex/context/base/mkxl/strc-mat.mkxl
@@ -1129,7 +1129,9 @@
\scratchcounter\zerocount
#2% preroll
\hbox to \displaywidth \bgroup
- \divide\displaywidth\scratchcounter
+ \ifcase\scratchcounter\else
+ \divide\displaywidth\scratchcounter
+ \fi
\hss
\enforced\let\startformula\strc_formulas_nested_formula_start
\enforced\let\stopformula \strc_formulas_nested_formula_stop