diff --git a/crates/cheatnet/src/runtime_extensions/forge_runtime_extension/mod.rs b/crates/cheatnet/src/runtime_extensions/forge_runtime_extension/mod.rs
index 8d854afdb2..92fb7949e5 100644
--- a/crates/cheatnet/src/runtime_extensions/forge_runtime_extension/mod.rs
+++ b/crates/cheatnet/src/runtime_extensions/forge_runtime_extension/mod.rs
@@ -35,8 +35,9 @@ use cairo_vm::vm::{
 };
 use conversions::byte_array::ByteArray;
 use conversions::felt::{ToShortString, TryInferFormat};
+use conversions::serde::NoLengthFeltVec;
 use conversions::serde::deserialize::BufferReader;
-use conversions::serde::serialize::CairoSerialize;
+use conversions::serde::serialize::{CairoSerialize, SerializeToFeltVec};
 use data_transformer::cairo_types::CairoU256;
 use rand::prelude::StdRng;
 use runtime::{
@@ -97,7 +98,13 @@ impl<'a> ExtensionLogic for ForgeExtension<'a> {
             let output = self
                 .oracle_hint_service
                 .execute_cheatcode(oracle_selector, input_reader.into_remaining());
-            return Ok(CheatcodeHandlingResult::Handled(output));
+            let mut reader = BufferReader::new(&output);
+            let deserialized: Result<NoLengthFeltVec<Felt>, ByteArray> = reader.read()?;
+            let converted = deserialized
+                .map_err(|error| EnhancedHintError::OracleError { error })
+                .map(|r| r.serialize_to_vec());
+
+            return Ok(CheatcodeHandlingResult::Handled(converted?));
         }
 
         match selector {
diff --git a/crates/runtime/src/lib.rs b/crates/runtime/src/lib.rs
index 1080d459ef..baf04bbb29 100644
--- a/crates/runtime/src/lib.rs
+++ b/crates/runtime/src/lib.rs
@@ -470,6 +470,8 @@ pub enum EnhancedHintError {
     StarknetApi(#[from] StarknetApiError),
     #[error("Failed to parse {path} file")]
     FileParsing { path: String },
+    #[error("{error}")]
+    OracleError { error: ByteArray },
 }
 
 impl From<BufferReadError> for EnhancedHintError {