diff --git a/rtlrepair/repair.py b/rtlrepair/repair.py
index 192261e..7758044 100644
--- a/rtlrepair/repair.py
+++ b/rtlrepair/repair.py
@@ -109,6 +109,10 @@ def visit_Inout(self, node: vast.Inout):
         # by default we ignore any inout declarations
         return node
 
+    def visit_Instance(self, node: vast.Instance):
+        # TODO: it would be OK to visit instance connections that are inputs to the instance
+        return node
+
     def visit_Parameter(self, node: vast.Parameter):
         # by default we ignore any parameter declarations
         return node
diff --git a/rtlrepair/templates/replace_literals.py b/rtlrepair/templates/replace_literals.py
index 1119295..ff75a7b 100644
--- a/rtlrepair/templates/replace_literals.py
+++ b/rtlrepair/templates/replace_literals.py
@@ -19,6 +19,13 @@ def __init__(self, vars: dict[str, VarInfo], widths: dict[vast.Node, int]):
         super().__init__(name="literal")
         self.vars = vars
         self.widths = widths
+        self.in_gen = False
+
+    def visit_GenerateStatement(self, node: vast.GenerateStatement):
+        self.in_gen = True
+        node = self.generic_visit(node)
+        self.in_gen = False
+        return node
 
     def visit_Identifier(self, node: vast.Identifier):
         var = self.vars[node.name]
diff --git a/test.py b/test.py
index d36774a..220f718 100755
--- a/test.py
+++ b/test.py
@@ -169,8 +169,9 @@ def test_d11(self):
 
     def test_d8(self):
         """ AXIS Switch with wrong index. Should be fixable by simple literal replacement... """
-        # TODO: enable some instrumentation in generate blocks
-        self.synth_cannot_repair(d8_dir, "d8", solver="yices2", init="zero", incremental=True, timeout=60)
+        changes = self.synth_success(d8_dir, "d8", solver="yices2", init="zero", incremental=True, timeout=60)
+        # correctly changes constant in one place, but ground truth does change in two places
+        self.assertEqual(changes, 1)
 
     def test_c4(self):
         """ AXIS Async Fifo (we turned the reset into a sync reset) signals ready too early, needs one guard in boolean condition """