diff --git a/packages/nodes-base/nodes/Google/Firebase/CloudFirestore/GenericFunctions.ts b/packages/nodes-base/nodes/Google/Firebase/CloudFirestore/GenericFunctions.ts
index 8caf77c2b9..2191c5bd93 100644
--- a/packages/nodes-base/nodes/Google/Firebase/CloudFirestore/GenericFunctions.ts
+++ b/packages/nodes-base/nodes/Google/Firebase/CloudFirestore/GenericFunctions.ts
@@ -83,7 +83,7 @@ export function jsonToDocument(value: string | number | IDataObject | IDataObjec
 		return { booleanValue: value };
 	} else if (value === null) {
 		return { nullValue: null };
-	} else if (!isNaN(value as number)) {
+	} else if (value !== '' && !isNaN(value as number)) {
 		if (value.toString().indexOf('.') !== -1) {
 			return { doubleValue: value };
 		} else {