diff --git a/src/fvOptions/sources/general/semiImplicitSource/SemiImplicitSource.C b/src/fvOptions/sources/general/semiImplicitSource/SemiImplicitSource.C
index 98b83b880064d608ed2324b7c277830ade10c6ad..a9cb925422246fda9ad6061cfe43c22bf7e5947e 100644
--- a/src/fvOptions/sources/general/semiImplicitSource/SemiImplicitSource.C
+++ b/src/fvOptions/sources/general/semiImplicitSource/SemiImplicitSource.C
@@ -305,7 +305,8 @@ void Foam::fv::SemiImplicitSource<Type>::addSup
             // Restore dimension checking
             dimensionSet::checking(oldDimChecking);
 
-            const ExprResultType* ptr = driver.isResultType<ExprResultType>();
+            const ExprResultType* ptr =
+                driver.template isResultType<ExprResultType>();
 
             if (!ptr)
             {
@@ -430,7 +431,8 @@ void Foam::fv::SemiImplicitSource<Type>::addSup
             // Restore dimension checking
             dimensionSet::checking(oldDimChecking);
 
-            const ExprResultType* ptr = driver.isResultType<ExprResultType>();
+            const ExprResultType* ptr =
+                driver.template isResultType<ExprResultType>();
 
             if (!ptr)
             {