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-rw-r--r--pretyping/cases.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/pretyping/cases.ml b/pretyping/cases.ml
index ad506b89b2..265994bd65 100644
--- a/pretyping/cases.ml
+++ b/pretyping/cases.ml
@@ -921,7 +921,7 @@ let known_dependent (_,dep) = (dep = KnownDep)
let expand_arg tms (p,ccl) ((_,t),_,na) =
let k = length_of_tomatch_type_sign na t in
- (p+k,liftn_predicate (k-1) p ccl tms)
+ (p+k,liftn_predicate (k-1) (p+1) ccl tms)
let adjust_impossible_cases pb pred tomatch submat =
if submat = [] then