diff --git a/prospector/core/report.py b/prospector/core/report.py
index fb9006271..0770bb70c 100644
--- a/prospector/core/report.py
+++ b/prospector/core/report.py
@@ -30,11 +30,15 @@ def json_(
 ):
     fn = filename if filename.endswith(".json") else f"{filename}.json"
 
+    params["enabled_rules"] = list(
+        params["enabled_rules"]
+    )  # Fix for OmegaConf not being JSON serializable
     data = {
         "parameters": params,
         "advisory_record": advisory_record.__dict__,
         "commits": [
-            r.as_dict(no_hash=True, no_rules=False, no_diff=no_diff) for r in results
+            r.as_dict(no_hash=True, no_rules=False, no_diff=no_diff)
+            for r in results
         ],
     }
     logger.info(f"Writing results to {fn}")
@@ -81,7 +85,9 @@ def html_(
     return fn
 
 
-def console_(results: List[Commit], advisory_record: AdvisoryRecord, verbose=False):
+def console_(
+    results: List[Commit], advisory_record: AdvisoryRecord, verbose=False
+):
     def format_annotations(commit: Commit) -> str:
         out = ""
         if verbose:
diff --git a/prospector/util/config_parser.py b/prospector/util/config_parser.py
index 593bd676a..39cd65f64 100644
--- a/prospector/util/config_parser.py
+++ b/prospector/util/config_parser.py
@@ -184,6 +184,7 @@ class DatabaseConfig:
 class ReportConfig:
     format: str
     name: str
+    no_diff: bool
 
 
 # Schema class for "llm_service" configuration