diff --git a/src/Type.cc b/src/Type.cc
index 5341476a3f..c00410c0ad 100644
--- a/src/Type.cc
+++ b/src/Type.cc
@@ -603,6 +603,9 @@ SetType::~SetType() = default;
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 FuncType::Capture::Capture(detail::IDPtr _id, bool _deep_copy) : id(std::move(_id)), deep_copy(_deep_copy) {
     is_managed = id ? ZVal::IsManagedType(id->GetType()) : false;
+    if ( ! is_managed )
+        // For non-managed types, deep copying isn't applicable.
+        deep_copy = false;
 }
 #pragma GCC diagnostic pop