diff --git a/src/error.nobj.lua b/src/error.nobj.lua
index 1e01b74..716f79c 100644
--- a/src/error.nobj.lua
+++ b/src/error.nobj.lua
@@ -30,22 +30,103 @@ error_code "GitError" "int" {
 		err_str = giterr->message;
 		break;
 	case GIT_ENOTFOUND:
-		err_str = "ENOTFOUND";
+		err_str = "Requested object could not be found";
 		break;
 	case GIT_EEXISTS:
-		err_str = "EEXISTS";
+		err_str = "Object exists preventing operation";
 		break;
 	case GIT_EAMBIGUOUS:
-		err_str = "EAMBIGUOUS";
+		err_str = "More than one object matches";
 		break;
 	case GIT_EBUFS:
-		err_str = "EBUFS";
+		err_str = "Output buffer too short to hold data";
+		break;
+	case GIT_EUSER:
+		err_str = "a special error that is never generated by libgit2 code";
+		break;
+	case GIT_EBAREREPO:
+		err_str = "Operation not allowed on bare repository";
+		break;
+	case GIT_EUNBORNBRANCH:
+		err_str = "HEAD refers to branch with no commits";
+		break;
+	case GIT_EUNMERGED:
+		err_str = "Merge in progress prevented operation";
+		break;
+	case GIT_ENONFASTFORWARD:
+		err_str = "Reference was not fast-forwardable";
+		break;
+	case GIT_EINVALIDSPEC:
+		err_str = "Name/ref spec was not in a valid format";
+		break;
+	case GIT_ECONFLICT:
+		err_str = "Checkout conflicts prevented operation";
+		break;
+	case GIT_ELOCKED:
+		err_str = "Lock file prevented operation";
+		break;
+	case GIT_EMODIFIED:
+		err_str = "Reference value does not match expected";
+		break;
+	case GIT_EAUTH:
+		err_str = "Authentication error";
+		break;
+	case GIT_ECERTIFICATE:
+		err_str = "Server certificate is invalid";
+		break;
+	case GIT_EAPPLIED:
+		err_str = "Patch/merge has already been applied";
+		break;
+	case GIT_EPEEL:
+		err_str = "The requested peel operation is not possible";
+		break;
+	case GIT_EEOF:
+		err_str = "Unexpected EOF";
+		break;
+	case GIT_EINVALID:
+		err_str = "Invalid operation or input";
+		break;
+	case GIT_EUNCOMMITTED:
+		err_str = "Uncommitted changes in index prevented operation";
+		break;
+	case GIT_EDIRECTORY:
+		err_str = "The operation is not valid for a directory";
+		break;
+	case GIT_EMERGECONFLICT:
+		err_str = "A merge conflict exists and cannot continue";
 		break;
 	case GIT_PASSTHROUGH:
-		err_str = "PASSTHROUGH";
+		err_str = "A user-configured callback refused to act";
 		break;
 	case GIT_ITEROVER:
-		err_str = "ITEROVER";
+		err_str = "Signals end of iteration with iterator";
+		break;
+	case GIT_RETRY:
+		err_str = "Internal only";
+		break;
+	case GIT_EMISMATCH:
+		err_str = "Hashsum mismatch in object";
+		break;
+	case GIT_EINDEXDIRTY:
+		err_str = "Unsaved changes in the index would be overwritten";
+		break;
+	case GIT_EAPPLYFAIL:
+		err_str = "Patch application failed";
+		break;
+	case GIT_EOWNER:
+		err_str = "The object is not owned by the current user";
+		break;
+	case GIT_TIMEOUT:
+		err_str = "The operation timed out";
+		break;
+	case GIT_EUNCHANGED:
+		err_str = "There were no changes";
+		break;
+	case GIT_ENOTSUPPORTED:
+		err_str = "An option is not supported";
+		break;
+	case GIT_EREADONLY:
+		err_str = "The subject is read-only";
 		break;
 	case GIT_OK:
 	default: