1 files changed, 0 insertions, 1 deletions

diff --git a/src/coding.c b/src/coding.c
index 31bffeab5c9..c5099a7b0b9 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -6052,7 +6052,6 @@ complement_process_encoding_system (Lisp_Object coding_system)
         coding_system = CDR_SAFE (Vdefault_process_coding_system);
       else if (i == 2)
         coding_system = preferred_coding_system ();
-      CHECK_CODING_SYSTEM (coding_system);
       spec = CODING_SYSTEM_SPEC (coding_system);
       if (NILP (spec))
         continue;