diff --git a/test/bytecode_2.7.5/01_while1.pyc b/test/bytecode_2.7.5/01_while1.pyc
new file mode 100644
index 00000000..5fc9ef90
Binary files /dev/null and b/test/bytecode_2.7.5/01_while1.pyc differ
diff --git a/test/simple_source/bug275/01_while1.py b/test/simple_source/bug275/01_while1.py
new file mode 100644
index 00000000..d7ef0649
--- /dev/null
+++ b/test/simple_source/bug275/01_while1.py
@@ -0,0 +1,9 @@
+# Issue #173. Bug is that 2.7.5 omits POP_BLOCK in
+# in later 2.7 grammar.
+#  while1stmt        ::= SETUP_LOOP l_stmts_opt JUMP_BACK COME_FROM
+#  while1stmt        ::= SETUP_LOOP l_stmts_opt CONTINUE COME_FROM
+# which is included in later code generation
+ms=0
+if ms==1:
+    while 1:
+        pass
diff --git a/uncompyle6/parsers/parse27.py b/uncompyle6/parsers/parse27.py
index e1d74b22..c61e3f26 100644
--- a/uncompyle6/parsers/parse27.py
+++ b/uncompyle6/parsers/parse27.py
@@ -136,6 +136,11 @@ class Python27Parser(Python2Parser):
         whilestmt         ::= SETUP_LOOP testexpr returns
                               _come_froms POP_BLOCK COME_FROM
 
+
+        # 2.7.5 (and before to 2.7.0?)
+        while1stmt        ::= SETUP_LOOP l_stmts_opt JUMP_BACK COME_FROM
+        while1stmt        ::= SETUP_LOOP l_stmts_opt CONTINUE COME_FROM
+
         while1stmt        ::= SETUP_LOOP returns bp_come_from
         while1stmt        ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_BLOCK COME_FROM
         whilestmt         ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK POP_BLOCK _come_froms