diff --git a/libsmtutil/SMTPortfolio.cpp b/libsmtutil/SMTPortfolio.cpp
index 94c92f390a53..fb82f3c69361 100644
--- a/libsmtutil/SMTPortfolio.cpp
+++ b/libsmtutil/SMTPortfolio.cpp
@@ -78,7 +78,7 @@ void SMTPortfolio::addAssertion(Expression const& _expr)
  * Ideally all solvers answer the query and agree on what the answer is
  * (all say SAT or all say UNSAT).
  *
- * The actual logic as as follows:
+ * The actual logic is as follows:
  * 1) If at least one solver answers the query, all the non-answer results are ignored.
  *   Here SAT/UNSAT is preferred over UNKNOWN since it's an actual answer, and over ERROR
  *   because one buggy solver/integration shouldn't break the portfolio.