diff --git a/lslopt/lslparse.py b/lslopt/lslparse.py
index 122f020..91e4b46 100644
--- a/lslopt/lslparse.py
+++ b/lslopt/lslparse.py
@@ -862,11 +862,7 @@ list lazy_list_set(list L, integer i, list v)
             # Lots of drama for checking types. This is pretty much like
             # addition, subtraction, multiply, divide, etc. all in one go.
             if tok0 == '=':
-                if typ == 'list' != rtyp:
-                    if self.explicitcast:
-                        expr = {'nt':'CAST', 't':typ, 'ch':[expr]}
-                else:
-                    expr = self.autocastcheck(expr, typ)
+                expr = self.autocastcheck(expr, typ)
 
                 return {'nt':'=', 't':typ, 'ch':[lvalue, expr]}
 
@@ -874,7 +870,7 @@ list lazy_list_set(list L, integer i, list v)
                 if typ == 'float':
                     expr = self.autocastcheck(expr, typ)
                 if rtyp != typ != 'list' or typ == rtyp == 'key':
-                    # key + key is the only disallowed combo of equals
+                    # key + key is the only disallowed combo of equal types
                     raise EParseTypeMismatch(self)
                 if self.explicitcast:
                     if typ == 'list' != rtyp:
diff --git a/testparser.py b/testparser.py
index ac72c1e..2eb1cbe 100644
--- a/testparser.py
+++ b/testparser.py
@@ -229,7 +229,7 @@ class Test02_Parser(UnitTestCase):
                 1+([]+(integer)~1);
                 list a;
                 float f;
-                a = 3; a += 3;
+                a = (list)3; a += 3;
                 f += 4; f += -4.3;
                 integer i;
                 i *= 1.3;
@@ -297,7 +297,7 @@ class Test03_Optimizer(UnitTestCase):
                 integer j = 3||4&&5|6^7&8.==9!=10.e+01f<11<=12>13.>=14<<15>>16==0&&3==
                     ++f-f++-(3 + llFloor(f)<<3 << 32) - 2 - 0;
                 integer k = 2 + (3 * 25 - 4)/2 % 9;
-                a = 3; a += !3;
+                a = (list)3; a += !3;
                 f += 4; f += -4.3;
                 integer i;
                 i = llGetListLength(L);