diff --git a/src/InputParser/keywords/grid.jl b/src/InputParser/keywords/grid.jl
index 1fb208f..650d86b 100644
--- a/src/InputParser/keywords/grid.jl
+++ b/src/InputParser/keywords/grid.jl
@@ -36,7 +36,7 @@ function parse_keyword!(data, outer_data, units, cfg, f, ::Union{Val{:MINPORV},
     rec = read_record(f)
     tdims = [1e-6];
     rec = parse_defaulted_line(rec, tdims)
-    zcorn = swap_unit_system!(rec, units, :volume)
+    rec = swap_unit_system!(rec, units, :volume)
     data["MINPV"] = only(rec)
 end