diff --git a/gas/ChangeLog b/gas/ChangeLog
index fa1d46b50e..5db5e377ce 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,9 @@
+2014-05-17  Nick Clifton  <nickc@redhat.com>
+
+	PR gas/16946
+	* config/tc-v850.c (handle_ctoff): Generate an error if called
+	when using the RH850 ABI.
+
 2014-05-16  Kaushik Phata  <Kaushik.Phatak@kpit.com>
 
 	* config/tc-rl78.c (enum options): Add OPTION_32BIT_DOUBLES
diff --git a/gas/config/tc-v850.c b/gas/config/tc-v850.c
index d5b9d7ab26..91acec4e69 100644
--- a/gas/config/tc-v850.c
+++ b/gas/config/tc-v850.c
@@ -2029,6 +2029,12 @@ handle_lo16 (const struct v850_operand *operand, const char **errmsg)
 static bfd_reloc_code_real_type
 handle_ctoff (const struct v850_operand *operand, const char **errmsg)
 {
+  if (v850_target_arch == bfd_arch_v850_rh850)
+    {
+      *errmsg = _("ctoff() is not supported by the rh850 ABI. Use -mgcc-abi instead");
+      return BFD_RELOC_64;  /* Used to indicate an error condition.  */
+    }
+
   if (operand == NULL)
     return BFD_RELOC_V850_CALLT_16_16_OFFSET;