diff --git a/crypto/asn1/asn1_lib.c b/crypto/asn1/asn1_lib.c
index 1091009..128d28f 100644
--- a/crypto/asn1/asn1_lib.c
+++ b/crypto/asn1/asn1_lib.c
@@ -424,12 +424,6 @@
     return M_ASN1_STRING_length(x);
 }
 
-void ASN1_STRING_length_set(ASN1_STRING *x, int len)
-{
-    M_ASN1_STRING_length_set(x, len);
-    return;
-}
-
 int ASN1_STRING_type(const ASN1_STRING *x)
 {
     return M_ASN1_STRING_type(x);
diff --git a/include/openssl/asn1.h b/include/openssl/asn1.h
index c1a8d5a..d50879f 100644
--- a/include/openssl/asn1.h
+++ b/include/openssl/asn1.h
@@ -487,7 +487,6 @@
 
 
 #define M_ASN1_STRING_length(x)	((x)->length)
-#define M_ASN1_STRING_length_set(x, n)	((x)->length = (n))
 #define M_ASN1_STRING_type(x)	((x)->type)
 #define M_ASN1_STRING_data(x)	((x)->data)