diff --git a/engines/e_afalg_err.c b/engines/e_afalg_err.c
index cc365064ef..47a3d034e5 100644
--- a/engines/e_afalg_err.c
+++ b/engines/e_afalg_err.c
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -62,7 +62,7 @@ static void ERR_unload_AFALG_strings(void)
     }
 }
 
-static void ERR_AFALG_error(int function, int reason, char *file, int line)
+static void ERR_AFALG_error(int function, int reason, const char *file, int line)
 {
     if (lib_code == 0)
         lib_code = ERR_get_next_error_library();
diff --git a/engines/e_capi_err.c b/engines/e_capi_err.c
index 12eb8e0a89..1d7636562e 100644
--- a/engines/e_capi_err.c
+++ b/engines/e_capi_err.c
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -85,7 +85,7 @@ static void ERR_unload_CAPI_strings(void)
     }
 }
 
-static void ERR_CAPI_error(int function, int reason, char *file, int line)
+static void ERR_CAPI_error(int function, int reason, const char *file, int line)
 {
     if (lib_code == 0)
         lib_code = ERR_get_next_error_library();
diff --git a/engines/e_dasync_err.c b/engines/e_dasync_err.c
index 1ee237a54d..16021f3196 100644
--- a/engines/e_dasync_err.c
+++ b/engines/e_dasync_err.c
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -47,7 +47,7 @@ static void ERR_unload_DASYNC_strings(void)
     }
 }
 
-static void ERR_DASYNC_error(int function, int reason, char *file, int line)
+static void ERR_DASYNC_error(int function, int reason, const char *file, int line)
 {
     if (lib_code == 0)
         lib_code = ERR_get_next_error_library();
diff --git a/engines/e_loader_attic_err.c b/engines/e_loader_attic_err.c
index 2bc4e854c8..d7c71463d8 100644
--- a/engines/e_loader_attic_err.c
+++ b/engines/e_loader_attic_err.c
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -64,7 +64,7 @@ static void ERR_unload_ATTIC_strings(void)
     }
 }
 
-static void ERR_ATTIC_error(int function, int reason, char *file, int line)
+static void ERR_ATTIC_error(int function, int reason, const char *file, int line)
 {
     if (lib_code == 0)
         lib_code = ERR_get_next_error_library();
diff --git a/engines/e_ossltest_err.c b/engines/e_ossltest_err.c
index 141fcd1ca9..f229aeb438 100644
--- a/engines/e_ossltest_err.c
+++ b/engines/e_ossltest_err.c
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -47,7 +47,7 @@ static void ERR_unload_OSSLTEST_strings(void)
     }
 }
 
-static void ERR_OSSLTEST_error(int function, int reason, char *file, int line)
+static void ERR_OSSLTEST_error(int function, int reason, const char *file, int line)
 {
     if (lib_code == 0)
         lib_code = ERR_get_next_error_library();