diff --git a/ChangeLog b/ChangeLog
index 0a8ace3..8513b34 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2026-07-21  Maximilian Muecke  <muecke.maximilian@gmail.com>
+
+	* src/utils.cpp: Correct Euribor2W and Euribor3W tenors when using
+	QuantLib 1.35 or later
+
 2026-07-20  Dirk Eddelbuettel  <edd@debian.org>
 
 	* configure.ac: Refresh version list triggering 'outdated' message;
diff --git a/src/utils.cpp b/src/utils.cpp
index efcf9ac..9ddc3ea 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -486,9 +486,9 @@ qlext::shared_ptr<QuantLib::IborIndex> buildIborIndex(std::string type,
     if (type == "EuriborSW") return qlext::make_shared<QuantLib::Euribor1W>(iborStrc);
     if (type == "Euribor1M") return qlext::make_shared<QuantLib::Euribor>(1*QuantLib::Months, iborStrc);
     if (type == "Euribor2M") return qlext::make_shared<QuantLib::Euribor>(2*QuantLib::Months, iborStrc);
-    if (type == "Euribor2W") return qlext::make_shared<QuantLib::Euribor>(2*QuantLib::Months, iborStrc);
+    if (type == "Euribor2W") return qlext::make_shared<QuantLib::Euribor>(2*QuantLib::Weeks, iborStrc);
     if (type == "Euribor3M") return qlext::make_shared<QuantLib::Euribor>(3*QuantLib::Months, iborStrc);
-    if (type == "Euribor3W") return qlext::make_shared<QuantLib::Euribor>(3*QuantLib::Months, iborStrc);
+    if (type == "Euribor3W") return qlext::make_shared<QuantLib::Euribor>(3*QuantLib::Weeks, iborStrc);
     if (type == "Euribor4M") return qlext::make_shared<QuantLib::Euribor>(4*QuantLib::Months, iborStrc);
     if (type == "Euribor5M") return qlext::make_shared<QuantLib::Euribor>(5*QuantLib::Months, iborStrc);
     if (type == "Euribor6M") return qlext::make_shared<QuantLib::Euribor>(6*QuantLib::Months, iborStrc);