1 files changed, 3 insertions, 2 deletions

diff --git a/src/lread.c b/src/lread.c
index 4eba8635521..50fc6ef8f3a 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -3798,10 +3798,11 @@ string_to_number (char const *string, int base, int flags)
 
       if (! (state & DOT_CHAR) && ! (flags & S2N_OVERFLOW_TO_FLOAT))
         {
-          AUTO_STRING (fmt, ("%s is out of fixnum range; "
+          AUTO_STRING (fmt, ("%s (base %d) is out of fixnum range; "
                              "maybe set `read-integer-overflow-as-float'?"));
           AUTO_STRING_WITH_LEN (arg, string, cp - string);
-          xsignal1 (Qoverflow_error, CALLN (Fformat_message, fmt, arg));
+          xsignal1 (Qoverflow_error,
+                    CALLN (Fformat_message, fmt, arg, make_number (base)));
         }
     }