diff --git a/headers/build/os/support/Errors.h b/headers/build/os/support/Errors.h
index 0b5306c920..2e8e2c5f1a 100644
--- a/headers/build/os/support/Errors.h
+++ b/headers/build/os/support/Errors.h
@@ -184,6 +184,8 @@
 #define HAIKU_ETIME			B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 58)
 #define HAIKU_ETXTBSY		B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 59)
 #define HAIKU_ENOATTR		B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 60)
+#define HAIKU_ENOTRECOVERABLE	B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 61)
+#define HAIKU_EOWNERDEAD	B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 62)
 
 /* B_NO_MEMORY (0x80000000) can't be negated, so it needs special handling */
 #define HAIKU_ENOMEM		B_NO_MEMORY
diff --git a/headers/os/support/Errors.h b/headers/os/support/Errors.h
index 592a5a407c..151c0fbe35 100644
--- a/headers/os/support/Errors.h
+++ b/headers/os/support/Errors.h
@@ -188,6 +188,8 @@
 #define ETIME			B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 58)
 #define ETXTBSY			B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 59)
 #define ENOATTR			B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 60)
+#define ENOTRECOVERABLE	B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 61)
+#define EOWNERDEAD		B_TO_POSIX_ERROR(B_POSIX_ERROR_BASE + 62)
 
 /* B_NO_MEMORY (0x80000000) can't be negated, so it needs special handling */
 #ifdef B_USE_POSITIVE_POSIX_ERRORS
diff --git a/src/bin/error.c b/src/bin/error.c
index 3f268c6948..d0340aaa51 100644
--- a/src/bin/error.c
+++ b/src/bin/error.c
@@ -287,6 +287,13 @@ struct error_pair {
 	E(ETIMEDOUT),
 #ifdef ETXTBSY
 	E(ETXTBSY),
+#endif
+	E(ENOATTR),
+#ifdef ENOTRECOVERABLE
+	E(ENOTRECOVERABLE),
+#endif
+#ifdef EOWNERDEAD
+	E(EOWNERDEAD),
 #endif
 	E(EWOULDBLOCK),
 	E(EXDEV),
diff --git a/src/system/libroot/posix/string/strerror.c b/src/system/libroot/posix/string/strerror.c
index 53cb6735c8..15b4cc8449 100644
--- a/src/system/libroot/posix/string/strerror.c
+++ b/src/system/libroot/posix/string/strerror.c
@@ -532,6 +532,10 @@ error_description(int error)
 			return "Text file busy";
 		case ENOATTR:
 			return "No such attribute";
+		case ENOTRECOVERABLE:
+			return "State not recoverable";
+		case EOWNERDEAD:
+			return "Previous owner died";
 
 		default:
 			return NULL;