diff --git a/asn.1/message.asn1 b/asn.1/message.asn1
index 63e9a486..2334d2ff 100644
--- a/asn.1/message.asn1
+++ b/asn.1/message.asn1
@@ -17,7 +17,7 @@ BEGIN
 EXPORTS ASN1Message;
 
 IMPORTS
-  PString, PStringList, Identity, IdentityList, PStringPairList, Hash, Rating
+  PString, PStringList, Identity, IdentityList, PStringPairList, Hash
   FROM PEP { iso(1) org(3) dod(6) internet(1) private(4)
              enterprise(1) pEp(47878) basic(0) };
 
@@ -86,14 +86,8 @@ ASN1Message ::= SEQUENCE {
     longmsg-formatted UTF8String   OPTIONAL, -- UTF-8 string of long message
                                              -- (formatted)
 
-    attachments PBlobList        OPTIONAL,   -- blobs with attachments
+    attachments PBlobList        OPTIONAL     -- blobs with attachments
     -- internal: rawmsg
-
-    -- This field is optional only for back-compatibility.  FIXME: no, not really: I should support a case for PEP_rating_undefined, which is not handled in the ASN.1 encoding.  This creates an ambiguity: the field could be omitted because there is no rating or because the other endpoint uses an older version
-    rating Rating OPTIONAL,                  -- message rating
-
-    -- Space for future extensions.
-    ...
 }
 
 END
diff --git a/src/map_asn1.c b/src/map_asn1.c
index 3a8ba783..8ea479bd 100644
--- a/src/map_asn1.c
+++ b/src/map_asn1.c
@@ -617,122 +617,6 @@ enomem:
     return NULL;
 }
 
-/**
- *  <!--       ASN1Rating_from_rating()       -->
- *  
- *  @brief Convert rating from its default representation into ASN.1
- *  
- *  @param msg[in]            rating to convert
- *  @param result[out]        the equivalent of in in the other encoding
- *  
- *  @retval PEP_STATUS_OK     conversion successful
- *  @retval PEP_ILLEGAL_VALUE the in argument was PEP_rating_undefined
- *  
- *  @warning fail on PEP_rating_undefined , which has no equivalent in the
- *           ASN.1 version
- *  @warning The API is different from the similarly named ASN1Message_from_message
- *           because of the incomplete mapping.  This should not be very error-prone
- *           in practice, because this function has two arguments and using it
- *           incorrectly will lead to compile-time errors.
- *  
- */
-static PEP_STATUS ASN1Rating_from_rating(
-        PEP_rating in,
-        e_Rating *out
-    )
-{
-#define CASE(pep_case, asn1_case)                             \
-    case pep_case: *out = (asn1_case); return PEP_STATUS_OK;
-
-    /* This must be kept in sync with the enum _PEP_rating definition in
-       pEpEngin.h and the machine-generated enum Rating definition in
-       asn.1/Rating.h : */
-    switch (in) {
-    case PEP_rating_undefined: return PEP_ILLEGAL_VALUE;
-    // no color
-    CASE (PEP_rating_cannot_decrypt, Rating_cannot_decrypt)
-    CASE (PEP_rating_have_no_key, Rating_have_no_key)
-    CASE (PEP_rating_unencrypted, Rating_unencrypted)
-    CASE (PEP_rating_unreliable, Rating_unreliable)
-    CASE (PEP_rating_b0rken, Rating_b0rken)
-
-    // yellow
-    CASE (PEP_rating_reliable, Rating_reliable)
-
-    // green
-    CASE (PEP_rating_trusted, Rating_trusted)
-    CASE (PEP_rating_trusted_and_anonymized, Rating_trusted_and_anonymized)
-    CASE (PEP_rating_fully_anonymous, Rating_fully_anonymous)
-
-    // red
-    CASE (PEP_rating_mistrust, Rating_mistrust)
-    CASE (PEP_rating_under_attack, Rating_under_attack)
-
-    default:
-        assert(0);
-    }
-
-#undef CASE
-}
-
-/**
- *  <!--       ASN1Rating_to_rating()       -->
- *  
- *  @brief Convert rating from ASN.1 into the default pEp representation
- *  
- *  @param msg[in]            pointer to a rating to convert, or NULL
- *  
- *  @retval                   PEP_rating_undefined if the in pointer was NULL
- *  @retval                   the equivalent of in in the other encoding
- *  
- *  @warning fail on PEP_rating_undefined , which has no equivalent in the
- *           ASN.1 version
- *  @warning The API is different from the similarly named ASN1Message_from_message
- *           because of the mapping, which is incomplete in one direction but
- *           not the other.
- *  
- */
-static PEP_rating ASN1Rating_to_rating(
-        Rating_t *in
-    )
-{
-#define CASE(pep_case, asn1_case)       \
-    case asn1_case: return (pep_case);
-
-    /* This must be kept in sync with the enum _PEP_rating definition in
-       pEpEngin.h and the machine-generated enum Rating definition in
-       asn.1/Rating.h : */
-
-    if (in == NULL)
-        return PEP_rating_undefined;
-    else
-        switch (* in) {
-        // no color
-        CASE (PEP_rating_cannot_decrypt, Rating_cannot_decrypt)
-        CASE (PEP_rating_have_no_key, Rating_have_no_key)
-        CASE (PEP_rating_unencrypted, Rating_unencrypted)
-        CASE (PEP_rating_unreliable, Rating_unreliable)
-        CASE (PEP_rating_b0rken, Rating_b0rken)
-
-        // yellow
-        CASE (PEP_rating_reliable, Rating_reliable)
-
-        // green
-        CASE (PEP_rating_trusted, Rating_trusted)
-        CASE (PEP_rating_trusted_and_anonymized, Rating_trusted_and_anonymized)
-        CASE (PEP_rating_fully_anonymous, Rating_fully_anonymous)
-
-        // red
-        CASE (PEP_rating_mistrust, Rating_mistrust)
-        CASE (PEP_rating_under_attack, Rating_under_attack)
-
-        default:
-            assert(0);
-        }
-
-#undef CASE
-}
-
 ASN1Message_t *ASN1Message_from_message(
         message *msg,
         ASN1Message_t *result,
@@ -966,21 +850,6 @@ ASN1Message_t *ASN1Message_from_message(
         result->attachments = bl;
     }
 
-    e_Rating asn1_rating;
-    PEP_STATUS rating_conversion_status
-        = ASN1Rating_from_rating(msg->rating, & asn1_rating);
-    if (rating_conversion_status == PEP_ILLEGAL_VALUE)
-        result->rating = NULL;
-    else if (rating_conversion_status == PEP_STATUS_OK) {
-        result->rating = calloc(1, sizeof (e_Rating));
-        assert(result->rating);
-        if (! result->rating)
-            goto enomem;
-        * result->rating = asn1_rating;
-    }
-    else
-        assert(0);
-
     return result;
 
 enomem:
@@ -1211,8 +1080,6 @@ message *ASN1Message_to_message(
         result->attachments = a;
     }
 
-    result->rating = ASN1Rating_to_rating(msg->rating);
-
     return result;
 
 enomem: