diff --git a/gas/ChangeLog b/gas/ChangeLog
index 4c2b03ef216..5a391a22636 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2022-07-18  Claudiu Zissulescu  <claziss@synopsys.com>
+
+	* config/tc-arc.c (md_assembly): Update strspn string with the
+	missing ciphers.
+
 2022-07-08  Nick Clifton  <nickc@redhat.com>
 
 	* 2.39 branch created.
diff --git a/gas/config/tc-arc.c b/gas/config/tc-arc.c
index fd648b742b4..a606078f5b8 100644
--- a/gas/config/tc-arc.c
+++ b/gas/config/tc-arc.c
@@ -2517,7 +2517,7 @@ md_assemble (char *str)
   struct arc_flags flags[MAX_INSN_FLGS];
 
   /* Split off the opcode.  */
-  opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_0123468");
+  opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_0123456789");
   opname = xmemdup0 (str, opnamelen);
 
   /* Signalize we are assembling the instructions.  */