diff --git a/server/src/lib/score-import/import-types/ir/fervidex/converter.ts b/server/src/lib/score-import/import-types/ir/fervidex/converter.ts
index 43d5284ea..339711f76 100644
--- a/server/src/lib/score-import/import-types/ir/fervidex/converter.ts
+++ b/server/src/lib/score-import/import-types/ir/fervidex/converter.ts
@@ -136,6 +136,9 @@ export const ConverterIRFervidex: ConverterFunction<FervidexScore, FervidexConte
 
 	let chart;
 	if (data.custom) {
+		if (!data.chart_sha256) {
+			throw new InvalidScoreFailure("Score has no chart_sha256 but is a custom?");
+		}
 		chart = await FindIIDXChartWith2DXtraHash(data.chart_sha256);
 	} else {
 		chart = await FindIIDXChartOnInGameIDVersion(
diff --git a/server/src/lib/score-import/import-types/ir/fervidex/parser.ts b/server/src/lib/score-import/import-types/ir/fervidex/parser.ts
index 801f34e5f..36eb9c1a6 100644
--- a/server/src/lib/score-import/import-types/ir/fervidex/parser.ts
+++ b/server/src/lib/score-import/import-types/ir/fervidex/parser.ts
@@ -17,8 +17,8 @@ import { FervidexContext, FervidexScore } from "./types";
 const PR_Fervidex: PrudenceSchema = {
 	chart: p.isIn("spb", "spn", "dpn", "sph", "dph", "spa", "dpa", "spl", "dpl"),
 	entry_id: p.isPositiveInteger,
-	chart_sha256: "string",
-	custom: "boolean",
+	chart_sha256: "*string",
+	custom: "*boolean",
 
 	pgreat: p.isPositiveInteger,
 	great: p.isPositiveInteger,
diff --git a/server/src/lib/score-import/import-types/ir/fervidex/types.ts b/server/src/lib/score-import/import-types/ir/fervidex/types.ts
index 72c9021c7..d041037af 100644
--- a/server/src/lib/score-import/import-types/ir/fervidex/types.ts
+++ b/server/src/lib/score-import/import-types/ir/fervidex/types.ts
@@ -4,9 +4,9 @@ export interface FervidexScore {
 	chart: `${"sp" | "dp"}${"b" | "n" | "h" | "a" | "l"}`;
 
 	entry_id: integer;
-	chart_sha256: string;
+	chart_sha256?: string;
 	// whether or whether not this chart is from 2dxtra
-	custom: boolean;
+	custom?: boolean;
 
 	pgreat: integer;
 	great: integer;