diff --git a/src/keria/app/cli/commands/sig-fix.py b/src/keria/app/cli/commands/sig-fix.py
index 0405df7e..4943bbf3 100644
--- a/src/keria/app/cli/commands/sig-fix.py
+++ b/src/keria/app/cli/commands/sig-fix.py
@@ -54,11 +54,19 @@ def fix(tymth, tock=0.0, **opts):
         caids.append(caid)
 
     signify_group_habs = dict()
+    malformed_caids = set()
     for caid in caids:
-        with existing.existingHby(name=caid, base=args.base) as hby:
-            for pre, hab in hby.habs.items():
-                if type(hab) is habbing.SignifyGroupHab:
-                    signify_group_habs[pre] = hab.name
+        try:
+            with existing.existingHby(name=caid, base=args.base) as hby:
+                for pre, hab in hby.habs.items():
+                    if type(hab) is habbing.SignifyGroupHab:
+                        signify_group_habs[pre] = hab.name
+        except KeyError:
+            print(
+                f"This controller AID: {caid} is malformed in some way.  Won't fix sigs."
+            )
+            malformed_caids.add(caid)
+    caids = [c for c in caids if c not in malformed_caids]
 
     # create caches of existing public keys and next key digests and the associated prefixes
     for caid in caids:
@@ -122,13 +130,20 @@ def fix(tymth, tock=0.0, **opts):
                     print()
                     smids = set()
                     rmids = set()
-                    for v in hab.kever.verfers:
-                        if v.qb64 in prefix_by_public_key:
-                            smids.add(prefix_by_public_key[v.qb64][0].qb64)
-
-                    for v in hab.kever.ndigers:
-                        if v.qb64 in prefix_by_next_key_digest:
-                            rmids.add(prefix_by_next_key_digest[v.qb64][0].qb64)
+                    if hab.kever:
+                        for v in hab.kever.verfers:
+                            if v.qb64 in prefix_by_public_key:
+                                smids.add(prefix_by_public_key[v.qb64][0].qb64)
+
+                        for v in hab.kever.ndigers:
+                            if v.qb64 in prefix_by_next_key_digest:
+                                rmids.add(prefix_by_next_key_digest[v.qb64][0].qb64)
+                    else:
+                        print(
+                            f"This hab {hab.name} - {pre} has no kever?  Won't fix sigs"
+                        )
+                        malformed_caids.add(caid)
+                        continue
 
                     print(
                         f"\t Proposed smids and rmids updates for {hab.name} - {pre}:"
@@ -151,3 +166,12 @@ def fix(tymth, tock=0.0, **opts):
                         print()
                         print("no updates performed, use --force to apply changes")
                         print()
+
+    print(
+        f"{len(malformed_caids)} malformed caids with issues that might not have had sig-fix applied"
+    )
+    print(malformed_caids)
+
+    print(
+        f"{len(set(caids) - malformed_caids)} caids that might have had sig-fix applied"
+    )