diff --git a/src/fintamath/functions/arithmetic/Div.cpp b/src/fintamath/functions/arithmetic/Div.cpp
index 9d36a7f69..46f54b815 100644
--- a/src/fintamath/functions/arithmetic/Div.cpp
+++ b/src/fintamath/functions/arithmetic/Div.cpp
@@ -27,8 +27,8 @@ std::unique_ptr<IMathObject> Div::multiDivSimpl(const IArithmetic &lhs, const IA
   static const auto multiDiv = [] {
     static MultiMethod<std::unique_ptr<IMathObject>(const IArithmetic &, const IArithmetic &)> outMultiPow;
 
-    outMultiPow.add<Integer, Integer>([](const Integer &lhs, const Integer &rhs) {
-      return divSimpl(lhs, rhs);
+    outMultiPow.add<Integer, Integer>([](const Integer &inLhs, const Integer &inRhs) {
+      return divSimpl(inLhs, inRhs);
     });
 
     return outMultiPow;
diff --git a/src/fintamath/functions/powers/Pow.cpp b/src/fintamath/functions/powers/Pow.cpp
index 9108de423..e170e2b91 100644
--- a/src/fintamath/functions/powers/Pow.cpp
+++ b/src/fintamath/functions/powers/Pow.cpp
@@ -30,16 +30,16 @@ std::unique_ptr<IMathObject> Pow::multiPowSimpl(const INumber &lhs, const INumbe
   static const auto multiPow = [] {
     static MultiMethod<std::unique_ptr<IMathObject>(const INumber &, const INumber &)> outMultiPow;
 
-    outMultiPow.add<Integer, Integer>([](const Integer &lhs, const Integer &rhs) {
-      return powSimpl(lhs, rhs);
+    outMultiPow.add<Integer, Integer>([](const Integer &inLhs, const Integer &inRhs) {
+      return powSimpl(inLhs, inRhs);
     });
 
-    outMultiPow.add<Rational, Rational>([](const Rational &lhs, const Rational &rhs) {
-      return powSimpl(lhs, rhs);
+    outMultiPow.add<Rational, Rational>([](const Rational &inLhs, const Rational &inRhs) {
+      return powSimpl(inLhs, inRhs);
     });
 
-    outMultiPow.add<Real, Real>([](const Real &lhs, const Real &rhs) {
-      return powSimpl(lhs, rhs);
+    outMultiPow.add<Real, Real>([](const Real &inLhs, const Real &inRhs) {
+      return powSimpl(inLhs, inRhs);
     });
 
     return outMultiPow;
diff --git a/src/fintamath/functions/powers/Root.cpp b/src/fintamath/functions/powers/Root.cpp
index 003f2d0b7..feca704e5 100644
--- a/src/fintamath/functions/powers/Root.cpp
+++ b/src/fintamath/functions/powers/Root.cpp
@@ -40,16 +40,16 @@ std::unique_ptr<IMathObject> Root::multiRootSimpl(const INumber &lhs, const INum
   static const auto multiRoot = [] {
     static MultiMethod<std::unique_ptr<IMathObject>(const INumber &, const INumber &)> outMultiRoot;
 
-    outMultiRoot.add<Integer, Integer>([](const Integer &lhs, const Integer &rhs) {
-      return rootSimpl(lhs, rhs);
+    outMultiRoot.add<Integer, Integer>([](const Integer &inLhs, const Integer &inRhs) {
+      return rootSimpl(inLhs, inRhs);
     });
 
-    outMultiRoot.add<Rational, Integer>([](const Rational &lhs, const Integer &rhs) {
-      return rootSimpl(lhs, rhs);
+    outMultiRoot.add<Rational, Integer>([](const Rational &inLhs, const Integer &inRhs) {
+      return rootSimpl(inLhs, inRhs);
     });
 
-    outMultiRoot.add<Real, Integer>([](const Real &lhs, const Integer &rhs) {
-      return rootSimpl(lhs, rhs);
+    outMultiRoot.add<Real, Integer>([](const Real &inLhs, const Integer &inRhs) {
+      return rootSimpl(inLhs, inRhs);
     });
 
     return outMultiRoot;