diff --git a/src/anchorParsers.ts b/src/anchorParsers.ts
index 9f84d32..9b0e82b 100644
--- a/src/anchorParsers.ts
+++ b/src/anchorParsers.ts
@@ -1088,7 +1088,7 @@ function parseFillLog(
       signature: signature,
       blocktime: blockTime,
       perp_market: perpMarketName,
-      baseSymbol: baseSymbol
+      base_symbol: baseSymbol
     };
   }
   
diff --git a/src/jsonParsers.ts b/src/jsonParsers.ts
index b537468..e109b37 100644
--- a/src/jsonParsers.ts
+++ b/src/jsonParsers.ts
@@ -1056,7 +1056,7 @@ function extractSettleFees(
         signature: signature,
         blocktime: blockTime,
         perp_market: perpMarketName,
-        baseSymbol: baseSymbol
+        base_symbol: baseSymbol
       },
     ];
   }