diff --git a/mypyc/irbuild/expression.py b/mypyc/irbuild/expression.py
index 59ecc4ac2c5c..a84c786bbd8e 100644
--- a/mypyc/irbuild/expression.py
+++ b/mypyc/irbuild/expression.py
@@ -1097,7 +1097,7 @@ def transform_generator_expr(builder: IRBuilder, o: GeneratorExpr) -> Value:
 
 
 def transform_assignment_expr(builder: IRBuilder, o: AssignmentExpr) -> Value:
-    value = builder.accept(o.value)
+    value = try_constant_fold(builder, o.value) or builder.accept(o.value)
     target = builder.get_assignment_target(o.target)
     builder.assign(target, value, o.line)
     return value