diff --git a/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/ReceiptLine.kt b/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/ReceiptLine.kt
index 7cfe1019..ed5d0da4 100644
--- a/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/ReceiptLine.kt
+++ b/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/ReceiptLine.kt
@@ -50,7 +50,8 @@ data class ReceiptLine(
     val giftCardSecret: String? = null,
     val priceCalculatedFromNet: Boolean = false,
     val linePriceGross: BigDecimal,
-    val discountId: Long? = null
+    val discountId: Long? = null,
+    val manualDiscountPercent: BigDecimal? = null
 ) {
     enum class Type(val value: String) {
         PRODUCT_SALE("PRODUCT_SALE"),
diff --git a/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/db/ReceiptLineExtensions.kt b/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/db/ReceiptLineExtensions.kt
index 59b4839a..a6ed510b 100644
--- a/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/db/ReceiptLineExtensions.kt
+++ b/libpretixsync/src/main/java/eu/pretix/libpretixsync/models/db/ReceiptLineExtensions.kt
@@ -50,4 +50,5 @@ fun ReceiptLine.toModel() =
         priceCalculatedFromNet = price_calculated_from_net == true,
         linePriceGross = line_price_gross ?: price,
         discountId = discount_id,
+        manualDiscountPercent = manual_discount_percent,
     )
diff --git a/libpretixsync/src/main/java/eu/pretix/libpretixsync/sqldelight/ReceiptLineExtensions.kt b/libpretixsync/src/main/java/eu/pretix/libpretixsync/sqldelight/ReceiptLineExtensions.kt
index ff96ed79..1c5c849d 100644
--- a/libpretixsync/src/main/java/eu/pretix/libpretixsync/sqldelight/ReceiptLineExtensions.kt
+++ b/libpretixsync/src/main/java/eu/pretix/libpretixsync/sqldelight/ReceiptLineExtensions.kt
@@ -55,5 +55,6 @@ fun ReceiptLine.toJSON(): JSONObject {
     jo.put("gift_card_secret", gift_card_secret)
     jo.put("line_price_gross", line_price_gross ?: JSONObject.NULL)
     jo.put("discount", discount_id ?: JSONObject.NULL)
+    jo.put("manual_discount_percent", manual_discount_percent)
     return jo
 }
diff --git a/libpretixsync/src/main/sqldelight/common/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq b/libpretixsync/src/main/sqldelight/common/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
index b97edffe..1be994e2 100644
--- a/libpretixsync/src/main/sqldelight/common/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
+++ b/libpretixsync/src/main/sqldelight/common/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
@@ -60,7 +60,8 @@ INSERT INTO ReceiptLine (
     variation_id,
     voucher_code,
     line_price_gross,
-    discount_id
+    discount_id,
+    manual_discount_percent
 )
 VALUES (
     ?,
@@ -108,5 +109,6 @@ VALUES (
     ?,
     ?,
     ?,
+    ?,
     ?
 );
\ No newline at end of file
diff --git a/libpretixsync/src/main/sqldelight/postgres/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq b/libpretixsync/src/main/sqldelight/postgres/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
index 9dcf0929..964c9109 100644
--- a/libpretixsync/src/main/sqldelight/postgres/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
+++ b/libpretixsync/src/main/sqldelight/postgres/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
@@ -47,6 +47,7 @@ CREATE TABLE ReceiptLine (
     voucher_code character varying(255),
     line_price_gross numeric,
     discount_id bigint,
+    manual_discount_percent bigint,
     receipt bigint REFERENCES Receipt (id) ON DELETE CASCADE,
 
     -- The foreign key constraint must be created in code since SQLDelight does not support self-referential foreign key constraints here
diff --git a/libpretixsync/src/main/sqldelight/postgres/migrations/118.sqm b/libpretixsync/src/main/sqldelight/postgres/migrations/118.sqm
new file mode 100644
index 00000000..144405a9
--- /dev/null
+++ b/libpretixsync/src/main/sqldelight/postgres/migrations/118.sqm
@@ -0,0 +1 @@
+ALTER TABLE ReceiptLine ADD manual_discount_percent numeric;
diff --git a/libpretixsync/src/main/sqldelight/sqlite/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq b/libpretixsync/src/main/sqldelight/sqlite/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
index 948636c2..4ef611d8 100644
--- a/libpretixsync/src/main/sqldelight/sqlite/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
+++ b/libpretixsync/src/main/sqldelight/sqlite/eu/pretix/libpretixsync/sqldelight/ReceiptLine.sq
@@ -49,7 +49,8 @@ CREATE TABLE ReceiptLine (
     variation_id INTEGER,
     voucher_code TEXT,
     line_price_gross REAL AS BigDecimal,
-    discount_id INTEGER
+    discount_id INTEGER,
+    manual_discount_percent REAL AS BigDecimal
 );
 
 CREATE INDEX ReceiptLine_addon_to_index ON ReceiptLine (addon_to);
diff --git a/libpretixsync/src/main/sqldelight/sqlite/migrations/118.sqm b/libpretixsync/src/main/sqldelight/sqlite/migrations/118.sqm
new file mode 100644
index 00000000..c43671aa
--- /dev/null
+++ b/libpretixsync/src/main/sqldelight/sqlite/migrations/118.sqm
@@ -0,0 +1,3 @@
+import java.math.BigDecimal;
+
+ALTER TABLE ReceiptLine ADD manual_discount_percent REAL AS BigDecimal;