diff --git a/modules/ssl/mod_ssl.h b/modules/ssl/mod_ssl.h
index a9157436fa..235bf5cb68 100644
--- a/modules/ssl/mod_ssl.h
+++ b/modules/ssl/mod_ssl.h
@@ -742,14 +742,14 @@ void          ssl_ds_table_wipeout(ssl_ds_table *);
 void          ssl_ds_table_kill(ssl_ds_table *);
 
 unsigned char *ssl_asn1_table_set(apr_hash_t *table,
-                                  const void *key,
+                                  const char *key,
                                   long int length);
 
 ssl_asn1_t *ssl_asn1_table_get(apr_hash_t *table,
-                               const void *key);
+                               const char *key);
 
 void ssl_asn1_table_unset(apr_hash_t *table,
-                          const void *key);
+                          const char *key);
 
 /*  Mutex Support  */
 int          ssl_mutex_init(server_rec *, apr_pool_t *);
diff --git a/modules/ssl/ssl_engine_ds.c b/modules/ssl/ssl_engine_ds.c
index 38dbc6799d..f9e3b85853 100644
--- a/modules/ssl/ssl_engine_ds.c
+++ b/modules/ssl/ssl_engine_ds.c
@@ -201,7 +201,7 @@ void ssl_ds_table_kill(ssl_ds_table *t)
  * we do not leak the malloc-ed data.
  */
 unsigned char *ssl_asn1_table_set(apr_hash_t *table,
-                                  const void *key,
+                                  const char *key,
                                   long int length)
 {
     apr_ssize_t klen = strlen(key);
@@ -235,13 +235,13 @@ unsigned char *ssl_asn1_table_set(apr_hash_t *table,
 }
 
 ssl_asn1_t *ssl_asn1_table_get(apr_hash_t *table,
-                               const void *key)
+                               const char *key)
 {
     return (ssl_asn1_t *)apr_hash_get(table, key, APR_HASH_KEY_STRING);
 }
 
 void ssl_asn1_table_unset(apr_hash_t *table,
-                          const void *key)
+                          const char *key)
 {
     apr_ssize_t klen = strlen(key);
     ssl_asn1_t *asn1 = apr_hash_get(table, key, klen);