diff --git a/esphome/components/md5/md5.h b/esphome/components/md5/md5.h
index 5c5fbc4cff..3951e635c8 100644
--- a/esphome/components/md5/md5.h
+++ b/esphome/components/md5/md5.h
@@ -38,7 +38,6 @@ class MD5Digest : public HashBase {
 
   /// Add bytes of data for the digest.
   void add(const uint8_t *data, size_t len) override;
-  void add(const char *data, size_t len) override { this->add((const uint8_t *) data, len); }
 
   /// Compute the digest, based on the provided data.
   void calculate() override;
diff --git a/esphome/components/sha256/sha256.h b/esphome/components/sha256/sha256.h
index d3e7ee60db..35552bc92c 100644
--- a/esphome/components/sha256/sha256.h
+++ b/esphome/components/sha256/sha256.h
@@ -29,8 +29,7 @@ class SHA256 : public esphome::HashBase {
 
   void init() override;
   void add(const uint8_t *data, size_t len) override;
-  void add(const char *data, size_t len) override { this->add((const uint8_t *) data, len); }
-  void add(const std::string &data) { this->add(data.c_str(), data.length()); }
+  void add(const std::string &data) { this->add((const uint8_t *) data.c_str(), data.length()); }
 
   void calculate() override;
 
diff --git a/esphome/core/hash_base.h b/esphome/core/hash_base.h
index f4c5dc630d..66221083e7 100644
--- a/esphome/core/hash_base.h
+++ b/esphome/core/hash_base.h
@@ -15,7 +15,7 @@ class HashBase {
 
   /// Add bytes of data for the hash
   virtual void add(const uint8_t *data, size_t len) = 0;
-  virtual void add(const char *data, size_t len) { this->add((const uint8_t *) data, len); }
+  void add(const char *data, size_t len) { this->add((const uint8_t *) data, len); }
 
   /// Compute the hash based on provided data
   virtual void calculate() = 0;