diff --git a/src/build_sequences.jl b/src/build_sequences.jl
index 10d464f777a371c6d5b51fdbae3d8963df48b73d..d563f7dd3ca5c8840bae3f97584dd165799ddeee 100644
--- a/src/build_sequences.jl
+++ b/src/build_sequences.jl
@@ -66,7 +66,7 @@ function build_sequence(f::Function, scanner::Union{Nothing, Scanner}, model::Mo
                     end
                     optimize!(model)
                     while termination_status(model) == INVALID_MODEL
-                        @variable(model, x[i=1:10])
+                        @variable(model)
                         optimize!(model)
                     end
                     if termination_status(model) in (LOCALLY_SOLVED, OPTIMAL)