diff --git a/Source/ablastr/fields/MultiFabRegister.H b/Source/ablastr/fields/MultiFabRegister.H
index febbf1c366e..f7525a0a749 100644
--- a/Source/ablastr/fields/MultiFabRegister.H
+++ b/Source/ablastr/fields/MultiFabRegister.H
@@ -37,7 +37,7 @@ namespace
 
     /** helper to either cast a string/char array to string to query an AMREX_ENUM */
     template<typename T>
-    std::string getExtractedName (T name)
+    std::string getExtractedName ([[maybe_unused]] T name)
     {
         if constexpr(is_castable_to_string<T>())
         {