diff --git a/py/showbc.c b/py/showbc.c
index c321dfd755..f3bd5ea15e 100644
--- a/py/showbc.c
+++ b/py/showbc.c
@@ -519,7 +519,8 @@ const byte *mp_bytecode_print_str(const mp_print_t *print, const byte *ip) {
             } else if (ip[-1] < MP_BC_STORE_FAST_MULTI + 16) {
                 mp_printf(print, "STORE_FAST " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_STORE_FAST_MULTI);
             } else if (ip[-1] < MP_BC_UNARY_OP_MULTI + MP_UNARY_OP_NUM_BYTECODE) {
-                mp_printf(print, "UNARY_OP " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_UNARY_OP_MULTI);
+                mp_uint_t op = ip[-1] - MP_BC_UNARY_OP_MULTI;
+                mp_printf(print, "UNARY_OP " UINT_FMT " %s", op, qstr_str(mp_unary_op_method_name[op]));
             } else if (ip[-1] < MP_BC_BINARY_OP_MULTI + MP_BINARY_OP_NUM_BYTECODE) {
                 mp_uint_t op = ip[-1] - MP_BC_BINARY_OP_MULTI;
                 mp_printf(print, "BINARY_OP " UINT_FMT " %s", op, qstr_str(mp_binary_op_method_name[op]));
diff --git a/tests/cmdline/cmd_showbc.py.exp b/tests/cmdline/cmd_showbc.py.exp
index d93fd7b487..22712b79ee 100644
--- a/tests/cmdline/cmd_showbc.py.exp
+++ b/tests/cmdline/cmd_showbc.py.exp
@@ -92,10 +92,10 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
 58 BINARY_OP 27 __add__
 \\d\+ STORE_FAST 8
 \\d\+ LOAD_FAST 0
-\\d\+ UNARY_OP 1
+\\d\+ UNARY_OP 1 __neg__
 \\d\+ STORE_FAST 9
 \\d\+ LOAD_FAST 0
-\\d\+ UNARY_OP 3
+\\d\+ UNARY_OP 3 
 \\d\+ STORE_FAST 10
 \\d\+ LOAD_FAST 0
 \\d\+ LOAD_DEREF 14
@@ -116,7 +116,7 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
 \\d\+ LOAD_DEREF 14
 \\d\+ LOAD_FAST 1
 \\d\+ BINARY_OP 2 __eq__
-\\d\+ UNARY_OP 3
+\\d\+ UNARY_OP 3 
 \\d\+ STORE_FAST 10
 \\d\+ LOAD_DEREF 14
 \\d\+ LOAD_ATTR c