diff --git a/dace/codegen/targets/framecode.py b/dace/codegen/targets/framecode.py
index ad4fc524d4..b74867a5f8 100644
--- a/dace/codegen/targets/framecode.py
+++ b/dace/codegen/targets/framecode.py
@@ -971,6 +971,7 @@ def generate_code(self,
             array = [v for v in sdfg.arrays.values() if v.size_desc_name is not None and v.size_desc_name == size_desc_name]
             assert (len(array) == 1)
             array = array[0]
+            print("AA", array, array.shape, sdfg.arrays)
             size_str = ",".join(["0" if cpp.sym2cpp(dim).startswith("__dace_defer") else cpp.sym2cpp(dim) for dim in array.shape])
             alloc_str = f'{ctypedef} {size_desc_name}[{size_nodedesc.shape[0]}]{{{size_str}}};\n'
             callsite_stream.write(alloc_str)
diff --git a/dace/sdfg/sdfg.py b/dace/sdfg/sdfg.py
index 0015e56458..febc4a2885 100644
--- a/dace/sdfg/sdfg.py
+++ b/dace/sdfg/sdfg.py
@@ -779,13 +779,13 @@ def replace_dict(self,
             arr = self.arrays[arr_name] if arr_name in self.arrays else None
             if arr is not None:
                 size_desc_name_before = arr.size_desc_name
-                if arr.transient and isinstance(arr, dt.Array):
+                if arr.transient and type(arr) == dt.Array:
                     arr.size_desc_name = size_desc_name if "__return" not in new_name else None
                 else:
                     arr.size_desc_name = None
                 if arr.size_desc_name is None and size_desc_name_before is not None:
                     size_ararys_to_rm.add(size_desc_name_before)
-        for size_arr_name in size_ararys_to_rm:
+        for size_arr_name in size_ararys_to_rm and size_arr_name in self.arrays:
             del self.arrays[size_arr_name]
 
         # Replace inside data descriptors
@@ -2109,7 +2109,7 @@ def add_datadesc(self, name: str, datadesc: dt.Data, find_new_name=False) -> str
         self._add_symbols(datadesc)
         if (
             datadesc.transient is True and
-            isinstance(datadesc, dt.Array) and
+            type(datadesc) == dt.Array and
             "__return" not in name and
             datadesc.lifetime is not dtypes.AllocationLifetime.External and
             datadesc.lifetime is not dtypes.AllocationLifetime.Persistent