diff --git a/include/cantera/base/AnyMap.h b/include/cantera/base/AnyMap.h
index 6bf1da64d..a3b07cb82 100644
--- a/include/cantera/base/AnyMap.h
+++ b/include/cantera/base/AnyMap.h
@@ -240,6 +240,8 @@ public:
 
     bool hasKey(const std::string& key) const;
 
+    void erase(const std::string& key);
+
     //! Return a string listing the keys in this AnyMap, e.g. for use in error
     //! messages
     std::string keys_str() const;
diff --git a/src/base/AnyMap.cpp b/src/base/AnyMap.cpp
index 3c6a9b538..94523b05b 100644
--- a/src/base/AnyMap.cpp
+++ b/src/base/AnyMap.cpp
@@ -590,6 +590,11 @@ bool AnyMap::hasKey(const std::string& key) const
     return (m_data.find(key) != m_data.end());
 }
 
+void AnyMap::erase(const std::string& key)
+{
+    m_data.erase(key);
+}
+
 std::string AnyMap::keys_str() const
 {
     fmt::memory_buffer b;