diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java
index e1ce62bdf..371202217 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java
@@ -547,6 +547,7 @@ public class UncachedKeyRing {
 
                     // if we already have a cert, and this one is not newer: skip it
                     if (selfCert != null && selfCert.getCreationTime().before(cert.getCreationTime())) {
+                        log.add(LogLevel.DEBUG, LogType.MSG_KC_SUB_DUP, indent);
                         redundantCerts += 1;
                         continue;
                     }
@@ -574,8 +575,9 @@ public class UncachedKeyRing {
                         continue;
                     }
 
-                    // if there is no binding (yet), or the revocation is newer than the binding: keep it
+                    // if there is a certification that is newer than this revocation, don't bother
                     if (selfCert != null && selfCert.getCreationTime().after(cert.getCreationTime())) {
+                        log.add(LogLevel.DEBUG, LogType.MSG_KC_SUB_REVOKE_DUP, indent);
                         redundantCerts += 1;
                         continue;
                     }
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/OperationResultParcel.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/OperationResultParcel.java
index 6e49baf92..f88df5301 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/OperationResultParcel.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/OperationResultParcel.java
@@ -201,6 +201,7 @@ public class OperationResultParcel implements Parcelable {
         MSG_KC_SUB_BAD_KEYID(R.string.msg_kc_sub_bad_keyid),
         MSG_KC_SUB_BAD_TIME(R.string.msg_kc_sub_bad_time),
         MSG_KC_SUB_BAD_TYPE(R.string.msg_kc_sub_bad_type),
+        MSG_KC_SUB_DUP (R.string.msg_kc_sub_dup),
         MSG_KC_SUB_PRIMARY_BAD(R.string.msg_kc_sub_primary_bad),
         MSG_KC_SUB_PRIMARY_BAD_ERR(R.string.msg_kc_sub_primary_bad_err),
         MSG_KC_SUB_PRIMARY_NONE(R.string.msg_kc_sub_primary_none),
diff --git a/OpenKeychain/src/main/res/values/strings.xml b/OpenKeychain/src/main/res/values/strings.xml
index 3221cd9cd..e24ac6925 100644
--- a/OpenKeychain/src/main/res/values/strings.xml
+++ b/OpenKeychain/src/main/res/values/strings.xml
@@ -578,13 +578,14 @@
     <string name="msg_kc_sub_bad_keyid">Subkey binding issuer id mismatch</string>
     <string name="msg_kc_sub_bad_time">Removing subkey binding certificate with future timestamp</string>
     <string name="msg_kc_sub_bad_type">Unknown subkey certificate type: %s</string>
+    <string name="msg_kc_sub_dup">Removing redundant subkey binding certificate</string>
     <string name="msg_kc_sub_primary_bad">Removing subkey binding certificate due to invalid primary binding certificate</string>
     <string name="msg_kc_sub_primary_bad_err">Removing subkey binding certificate due to bad primary binding certificate</string>
     <string name="msg_kc_sub_primary_none">Removing subkey binding certificate due to missing primary binding certificate</string>
     <string name="msg_kc_sub_no_cert">No valid certificate found for %s, removing from ring</string>
-    <string name="msg_kc_sub_revoke_bad_err">Removing bad subkey revocation key</string>
-    <string name="msg_kc_sub_revoke_bad">Removing bad subkey revocation key</string>
-    <string name="msg_kc_sub_revoke_dup">Removing redundant keyring revocation key</string>
+    <string name="msg_kc_sub_revoke_bad_err">Removing bad subkey revocation certificate</string>
+    <string name="msg_kc_sub_revoke_bad">Removing bad subkey revocation certificate</string>
+    <string name="msg_kc_sub_revoke_dup">Removing redundant subkey revocation certificate</string>
     <string name="msg_kc_success">Keyring canonicalization successful, no changes</string>
     <string name="msg_kc_success_bad">Keyring canonicalization successful, removed %s erroneous certificates</string>
     <string name="msg_kc_success_bad_and_red">Keyring canonicalization successful, removed %1$s erroneous and %2$s redundant certificates</string>