Capture "this" references

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java b/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java
index 574854d..913b1b7 100644
--- a/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java
+++ b/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java
@@ -194,7 +194,7 @@ public class PythonCodeGenerator {
         return expression.accept(EXPRESSION_GENERATOR);
     }
     
-    private static List<PythonExpressionNode> generateExpressions(Iterable<ExpressionNode> expressions) {
+    private static List<PythonExpressionNode> generateExpressions(Iterable<? extends ExpressionNode> expressions) {
         return ImmutableList.copyOf(Iterables.transform(expressions, PythonCodeGenerator::generateExpression));
     }
     private static final ExpressionGenerator EXPRESSION_GENERATOR = new ExpressionGenerator();