diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index 7e125ef..312075d 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -147,22 +147,21 @@ def bug1333982(x=[]):
 
 dis_bug1333982 = """\
 %3d           0 LOAD_CONST               1 (0)
-              2 POP_JUMP_IF_TRUE        26
+              2 POP_JUMP_IF_TRUE        24
               4 LOAD_GLOBAL              0 (AssertionError)
               6 LOAD_CONST               2 (<code object <listcomp> at 0x..., file "%s", line %d>)
               8 LOAD_CONST               3 ('bug1333982.<locals>.<listcomp>')
              10 MAKE_FUNCTION            0
              12 LOAD_FAST                0 (x)
-             14 GET_ITER
-             16 CALL_FUNCTION            1 (1 positional, 0 keyword pair)
+             14 CALL_FUNCTION            1 (1 positional, 0 keyword pair)
 
-%3d          18 LOAD_CONST               4 (1)
-             20 BINARY_ADD
-             22 CALL_FUNCTION            1 (1 positional, 0 keyword pair)
-             24 RAISE_VARARGS            1
+%3d          16 LOAD_CONST               4 (1)
+             18 BINARY_ADD
+             20 CALL_FUNCTION            1 (1 positional, 0 keyword pair)
+             22 RAISE_VARARGS            1
 
-%3d     >>   26 LOAD_CONST               0 (None)
-             28 RETURN_VALUE
+%3d     >>   24 LOAD_CONST               0 (None)
+             26 RETURN_VALUE
 """ % (bug1333982.__code__.co_firstlineno + 1,
        __file__,
        bug1333982.__code__.co_firstlineno + 1,
diff --git a/Python/compile.c b/Python/compile.c
index ffde903..41c884c 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -3432,6 +3432,8 @@ compiler_comprehension_generator(struct compiler *c,
     else {
         /* Sub-iter - calculate on the fly */
         VISIT(c, expr, gen->iter);
+    }
+    if (gen_index != 0 || type != COMP_GENEXP) {
         ADDOP(c, GET_ITER);
     }
     compiler_use_next_block(c, start);
@@ -3549,7 +3551,9 @@ compiler_comprehension(struct compiler *c, expr_ty e, int type,
     Py_DECREF(co);
 
     VISIT(c, expr, outermost_iter);
-    ADDOP(c, GET_ITER);
+    if (type == COMP_GENEXP) {
+        ADDOP(c, GET_ITER);
+    }
     ADDOP_I(c, CALL_FUNCTION, 1);
     return 1;
 error_in_scope: