diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result
index 1c0321ac658..bd2825822a1 100644
--- a/mysql-test/r/select.result
+++ b/mysql-test/r/select.result
@@ -2699,3 +2699,6 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	Using where
 DROP TABLE t1,t2;
+select x'10' + 0, X'10' + 0, b'10' + 0, B'10' + 0;
+x'10' + 0	X'10' + 0	b'10' + 0	B'10' + 0
+16	16	2	2
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test
index 372325c4cbd..2558a3aeaeb 100644
--- a/mysql-test/t/select.test
+++ b/mysql-test/t/select.test
@@ -2271,3 +2271,8 @@ EXPLAIN SELECT t1.a FROM t1 INNER JOIN t2 ON t1.a=t2.a;
 
 DROP TABLE t1,t2;
 
+#
+# Bug #10650
+#
+
+select x'10' + 0, X'10' + 0, b'10' + 0, B'10' + 0;
diff --git a/mysys/charset.c b/mysys/charset.c
index 534a6aa998e..cbd9ba16b4c 100644
--- a/mysys/charset.c
+++ b/mysys/charset.c
@@ -97,7 +97,7 @@ static my_bool init_state_maps(CHARSET_INFO *cs)
 
   /* Special handling of hex and binary strings */
   state_map[(uchar)'x']= state_map[(uchar)'X']= (uchar) MY_LEX_IDENT_OR_HEX;
-  state_map[(uchar)'b']= state_map[(uchar)'b']= (uchar) MY_LEX_IDENT_OR_BIN;
+  state_map[(uchar)'b']= state_map[(uchar)'B']= (uchar) MY_LEX_IDENT_OR_BIN;
   state_map[(uchar)'n']= state_map[(uchar)'N']= (uchar) MY_LEX_IDENT_OR_NCHAR;
   return 0;
 }