diff --git a/invariant/analyzer/runtime/function_cache.py b/invariant/analyzer/runtime/function_cache.py
index e3f1f54..11142e2 100644
--- a/invariant/analyzer/runtime/function_cache.py
+++ b/invariant/analyzer/runtime/function_cache.py
@@ -74,5 +74,4 @@ async def call_either_way(
     if inspect.iscoroutinefunction(func):
         return await func(*args, **kwargs)
     else:
-        print([func, args, kwargs], flush=True)
         return func(*args, **kwargs)  # type: ignore
diff --git a/invariant/analyzer/runtime/nodes.py b/invariant/analyzer/runtime/nodes.py
index bafe9a5..420e20b 100644
--- a/invariant/analyzer/runtime/nodes.py
+++ b/invariant/analyzer/runtime/nodes.py
@@ -135,9 +135,11 @@ class Contents(RootModel[list[Chunk]]):
     def __contains__(self, item: object) -> bool:
         for chunk in self.root:
             if isinstance(chunk, TextChunk):
-                return item in chunk.text
+                if item in chunk.text:
+                    return True
             elif isinstance(chunk, Image):
-                return item in chunk.image_url["url"]
+                if item in chunk.image_url["url"]:
+                    return True
         return False
 
     def __invariant_attribute__(self, name: str):
@@ -324,7 +326,16 @@ class ToolParameter(BaseModel):
     enum: Optional[List[str]] = None
 
     def __invariant_attribute__(self, name: str):
-        if name in ["type", "name", "description", "required", "properties", "additionalProperties", "items", "enum"]:
+        if name in [
+            "type",
+            "name",
+            "description",
+            "required",
+            "properties",
+            "additionalProperties",
+            "items",
+            "enum",
+        ]:
             return getattr(self, name)
         raise InvariantAttributeError(
             f"Attribute {name} not found in ToolParameter. Available attributes are: type, name, description, required, properties, additionalProperties, items, enum"
diff --git a/invariant/tests/analyzer/test_chunked.py b/invariant/tests/analyzer/test_chunked.py
index 7a853aa..33a498a 100644
--- a/invariant/tests/analyzer/test_chunked.py
+++ b/invariant/tests/analyzer/test_chunked.py
@@ -1,6 +1,6 @@
 import unittest
 
-from invariant.analyzer import Monitor
+from invariant.analyzer import Monitor, Policy
 from invariant.analyzer.traces import chunked
 
 
@@ -86,3 +86,56 @@ def test_simple_but_multiple_text_chunks(self):
         input.extend(pending_input)
 
         assert len(errors) == 0, "Expected no errors, but got: " + str(errors)
+
+    def test_contains_in_text_chunk(self):
+        # tests that 'abc' in message.content works both when 'abc' is in chunk 0 or chunk 1
+        policy = Policy.from_string(
+            """
+
+raise "pattern found" if:
+    (msg: Message)
+    msg.role == "assistant"
+    "abc" in msg.content
+"""
+        )
+
+        # in second chunk
+        input = [
+            {
+                "role": "assistant",
+                "content": [
+                    {"type": "text", "text": "Hello, "},
+                    {"type": "text", "text": "aa abc aa"},
+                ],
+            }
+        ]
+
+        result = policy.analyze(input, [])
+        assert len(result.errors) == 1, "Expected one error, but got: " + str(result)
+
+        # in no chunk
+        input = [
+            {
+                "role": "assistant",
+                "content": [
+                    {"type": "text", "text": "Hello, "},
+                    {"type": "text", "text": "adc"},
+                ],
+            }
+        ]
+
+        result = policy.analyze(input, [])
+        assert len(result.errors) == 0, "Expected no errors, but got: " + str(result)
+
+        # in first chunk
+        input = [
+            {
+                "role": "assistant",
+                "content": [
+                    {"type": "text", "text": "aa abc aa"},
+                    {"type": "text", "text": "Hello, "},
+                ],
+            }
+        ]
+        result = policy.analyze(input, [])
+        assert len(result.errors) == 1, "Expected one error, but got: " + str(result)
diff --git a/uv.lock b/uv.lock
index 08cbc11..c75005a 100644
--- a/uv.lock
+++ b/uv.lock
@@ -842,7 +842,7 @@ wheels = [
 
 [[package]]
 name = "invariant-ai"
-version = "0.3"
+version = "0.3.1"
 source = { virtual = "." }
 dependencies = [
     { name = "aiohttp" },