diff --git a/arbor/include/arbor/util/any_ptr.hpp b/arbor/include/arbor/util/any_ptr.hpp
index c16247871..8e9df9d18 100644
--- a/arbor/include/arbor/util/any_ptr.hpp
+++ b/arbor/include/arbor/util/any_ptr.hpp
@@ -61,7 +61,7 @@ struct ARB_SYMBOL_VISIBLE any_ptr {
 
     template <typename T, typename = std::enable_if_t<std::is_pointer<T>::value>>
     constexpr T as() const noexcept {
-        if (std::is_same<T, void*>::value) {
+        if constexpr (std::is_same_v<T, void*>) {
             return (T)ptr_;
         }
         else {
diff --git a/modcc/symge.hpp b/modcc/symge.hpp
index 4ed8a9237..a1419b7e4 100644
--- a/modcc/symge.hpp
+++ b/modcc/symge.hpp
@@ -46,7 +46,7 @@ struct symbol_term {
     symbol left, right;
 
     symbol_term() = default;
-    symbol_term(const symbol left): left(std::move(left)) {}
+    symbol_term(symbol left): left(std::move(left)) {}
     symbol_term(symbol left, symbol right): left(std::move(left)), right(std::move(right)) {}
     bool is_zero() const { return !left || !right; }
     operator bool() const { return !is_zero(); }
@@ -56,7 +56,7 @@ struct symbol_term_diff {
     symbol_term left, right;
 
     symbol_term_diff() = default;
-    symbol_term_diff(const symbol_term left): left(std::move(left)) {}
+    symbol_term_diff(symbol_term left): left(std::move(left)) {}
     symbol_term_diff(symbol_term left, symbol_term right): left(std::move(left)), right(std::move(right)) {}
 };