diff --git a/phasm/compiler.py b/phasm/compiler.py
index 669c8cd..faed2e7 100644
--- a/phasm/compiler.py
+++ b/phasm/compiler.py
@@ -194,7 +194,7 @@ def tuple_instantiation(wgn: WasmGenerator, inp: ourlang.TupleInstantiation) ->
 
         assert element.type3 == exp_type3
 
-        if isinstance(exp_type3, type3types.AppliedType3) and exp_type3.base is type3types.tuple:
+        if isinstance(exp_type3, type3types.StructType3) or isinstance(exp_type3, type3types.AppliedType3):
             mtyp = 'i32'
         else:
             assert isinstance(exp_type3, type3types.PrimitiveType3), NotImplementedError('Tuple of applied types / structs')
@@ -859,7 +859,7 @@ def _generate_struct_constructor(wgn: WasmGenerator, inp: ourlang.StructConstruc
     # Store each member individually
     for memname, mtyp3 in inp.struct_type3.members.items():
         mtyp: Optional[str]
-        if isinstance(mtyp3, type3types.StructType3):
+        if isinstance(mtyp3, type3types.StructType3) or isinstance(mtyp3, type3types.AppliedType3):
             mtyp = 'i32'
         else:
             mtyp = LOAD_STORE_TYPE_MAP.get(mtyp3.name)
diff --git a/phasm/parser.py b/phasm/parser.py
index fc1d28f..c6595f8 100644
--- a/phasm/parser.py
+++ b/phasm/parser.py
@@ -431,7 +431,7 @@ class OurVisitor:
             arguments = [
                 self.visit_Module_FunctionDef_expr(module, function, our_locals, arg_node)
                 for arg_node in node.elts
-                if isinstance(arg_node, (ast.Constant, ast.Tuple, ))
+                if isinstance(arg_node, (ast.Constant, ast.Tuple, ast.Call, ))
             ]
 
             if len(arguments) != len(node.elts):
@@ -655,7 +655,9 @@ class OurVisitor:
             if not isinstance(node.ctx, ast.Load):
                 _raise_static_error(node, 'Must be load context')
 
-            if node.value.id not in type3types.LOOKUP_TABLE: # FIXME: Tuple of tuples?
+            if (
+                node.value.id not in type3types.LOOKUP_TABLE
+                and node.value.id not in module.struct_definitions): # FIXME: Tuple of tuples?
                 _raise_static_error(node, f'Unrecognized type {node.value.id}')
 
             return type3types.AppliedType3(
diff --git a/tests/integration/test_lang/generator.py b/tests/integration/test_lang/generator.py
index 872dacf..0d9982e 100644
--- a/tests/integration/test_lang/generator.py
+++ b/tests/integration/test_lang/generator.py
@@ -47,22 +47,26 @@ def generate_assertion_expect_type_error(result, error_msg, error_comment = None
 	result.append(f'assert {repr(error_msg)} == exc_info.value.args[0][0].msg')
 	result.append(f'assert {repr(error_comment)} == exc_info.value.args[0][0].comment')
 
-def json_does_not_support_byte_values_fix(inp: Dict[Any, Any]):
-	key_names = list(inp)
-	for key in key_names:
-		value = inp[key]
+def json_does_not_support_byte_or_tuple_values_fix(inp: Any):
+	if isinstance(inp, (int, float, )):
+		return inp
 
-		if isinstance(value, str):
-			if value.startswith('bytes:'):
-				inp[key] = value[6:].encode()
-			continue
+	if isinstance(inp, str):
+		if inp.startswith('bytes:'):
+			return inp[6:].encode()
+		return inp
 
-		if isinstance(value, dict):
-			json_does_not_support_byte_values_fix(value)
-			continue
+	if isinstance(inp, list):
+		return tuple(map(json_does_not_support_byte_or_tuple_values_fix, inp))
 
-		if isinstance(value, list):
-			raise NotImplementedError
+	if isinstance(inp, dict):
+		key_names = list(inp)
+		return {
+			key: json_does_not_support_byte_or_tuple_values_fix(val)
+			for key, val in inp.items()
+		}
+
+	raise NotImplementedError(inp)
 
 def generate_assertions(settings, result_code):
 	result = []
@@ -75,13 +79,11 @@ def generate_assertions(settings, result_code):
 	}
 
 	if 'PYTHON' in settings:
-		locals_.update(settings['PYTHON'])
+		locals_.update(json_does_not_support_byte_or_tuple_values_fix(settings['PYTHON']))
 
 	if 'VAL0' not in locals_:
 		locals_['VAL0'] = eval(settings['VAL0'])
 
-	json_does_not_support_byte_values_fix(locals_)
-
 	exec(result_code, {}, locals_)
 
 	return '    ' + '\n    '.join(result) + '\n'
diff --git a/tests/integration/test_lang/generator_static_array_with_structs.json b/tests/integration/test_lang/generator_static_array_with_structs.json
new file mode 100644
index 0000000..3fff78c
--- /dev/null
+++ b/tests/integration/test_lang/generator_static_array_with_structs.json
@@ -0,0 +1,33 @@
+{
+	"TYPE_NAME": "static_array_with_structs",
+	"TYPE": "StructMain[3]",
+	"VAL0": "(StructMain(1, (StructCode(-4), 4, 4.0, ), (StructCode(-1), StructCode(-2), )), StructMain(2, (StructCode(-16), 16, 16.0, ), (StructCode(3), StructCode(14), )), StructMain(3, (StructCode(-256), 256, 256.0, ), (StructCode(-9), StructCode(-98), )), )",
+	"CODE_HEADER": [
+		"class StructCode:",
+		"    code: i32",
+		"",
+		"class StructMain:",
+		"    val00: u8",
+		"    val01: (StructCode, u64, f32, )",
+		"    val02: StructCode[2]"
+	],
+	"PYTHON": {
+		"VAL0": [
+			{
+				"val00": 1,
+				"val01": [{"code": -4}, 4, 4.0],
+				"val02": [{"code": -1}, {"code": -2}]
+			},
+			{
+				"val00": 2,
+				"val01": [{"code": -16}, 16, 16.0],
+				"val02": [{"code": 3}, {"code": 14}]
+			},
+			{
+				"val00": 3,
+				"val01": [{"code": -256}, 256, 256.0],
+				"val02": [{"code": -9}, {"code": -98}]
+			}
+		]
+	}
+}