diff --git a/src/api/dotnet/Optimize.cs b/src/api/dotnet/Optimize.cs
index 3bc06de16..3a54df5d9 100644
--- a/src/api/dotnet/Optimize.cs
+++ b/src/api/dotnet/Optimize.cs
@@ -156,7 +156,7 @@ namespace Microsoft.Z3
         /// <remarks>
         /// This API is an alternative to <see cref="Check(Expr[])"/> with assumptions for extracting unsat cores.
         /// Both APIs can be used in the same solver. The unsat core will contain a combination
-        /// of the Boolean variables provided using <see cref="AssertAndTrack(BoolExpr[],BoolExpr[])"/> 
+        /// of the Boolean variables provided using <see cref="AssertAndTrack(BoolExpr,BoolExpr)"/> 
         /// and the Boolean literals
         /// provided using <see cref="Check(Expr[])"/> with assumptions.
         /// </remarks>        
diff --git a/src/math/lp/nra_solver.cpp b/src/math/lp/nra_solver.cpp
index f083c0f82..c4fb91968 100644
--- a/src/math/lp/nra_solver.cpp
+++ b/src/math/lp/nra_solver.cpp
@@ -65,7 +65,7 @@ struct solver::imp {
         if (m_nla_core.emons().is_monic_var(v)) {
             auto const &m = m_nla_core.emons()[v];
             for (auto v2 : m.vars()) {
-                den = lcm(denominators[v2], den);
+                den = denominators[v2] * den;
                 polynomial_ref pw(definitions.get(v2), m_nlsat->pm());
                 if (!p)
                     p = pw;