diff --git a/README.md b/README.md
index b0edba4..e17275b 100644
--- a/README.md
+++ b/README.md
@@ -282,7 +282,7 @@ The columns of the resulting accounting.csv file are defined as follows:
 - `10920/20051`: Net Card income + tips (card) Mittagstisch [`Net Card MiTi` + `MiTi_Tips_Card`]
 - `10920/10910`: Tips LoLa paid via Card [`Tips_Card` - `MiTi_Tips_Card`]
 - `68450/10920`: Commission for Café, Vermietung, summer party, Deposit, Rental, Cultural Payments, and `PaidOut`, i.e. w/o Mittagstisch [`Commission LoLa`]
-- `20051/10900`: Amount LoLa owes to Mittagstisch (`Debt to MiTi`)
+- `20051/10930`: Amount LoLa owes to Mittagstisch (`Debt to MiTi`)
 - `20051/30500`: Income LoLa from MiTi selling LoLa [`Gross MiTi (LoLa)` - `Contribution MiTi` = `Income LoLa MiTi`]
 
 
@@ -295,4 +295,4 @@ They serve for consolidation purposes:
 
 Where the absolute net sum for the transitory accounts must not be > 0.05, i.e.:
 - for `10920`: abs(`10920/30200` + `10920/30700` + `10920/30800` + `10920/23050` + `10920/46000` + `10920/31000` + `10920/32000` +`10920/20051` + `10920/10000` + `10920/10910` - `Payment SumUp` - `68450/10920`) < 0.05
-- for `20051`: abs(`10920/20051` - `20051/10900` - `20051/30200`) < 0.05
+- for `20051`: abs(`10920/20051` - `20051/10930` - `20051/30200`) < 0.05
diff --git a/src/export/export_accounting.rs b/src/export/export_accounting.rs
index d0c35d6..7b097ce 100644
--- a/src/export/export_accounting.rs
+++ b/src/export/export_accounting.rs
@@ -57,7 +57,7 @@ pub fn gather_df_accounting(df: &DataFrame) -> PolarsResult<DataFrame> {
             col("Net Card Total MiTi").alias("10920/20051"),
             col("Tips Card LoLa").alias("10920/10910"),
             col("LoLa_Commission").alias("68450/10920"),
-            col("Debt to MiTi").alias("20051/10900"),
+            col("Debt to MiTi").alias("20051/10930"),
             col("Income LoLa MiTi").alias("20051/30500"),
         ])
         .collect()
@@ -87,7 +87,7 @@ fn validate_acc_constraint_10920(df_acc: &DataFrame) -> Result<(), Box<dyn Error
 
 /// validates the transitory account 10920 nets to 0
 fn validate_acc_constraint_20051(df_acc: &DataFrame) -> Result<(), Box<dyn Error>> {
-    let net_expr = col("10920/20051") - col("20051/10900") - col("20051/30500");
+    let net_expr = col("10920/20051") - col("20051/10930") - col("20051/30500");
     validate_constraint(df_acc, net_expr, "20051")?
 }
 
@@ -563,7 +563,7 @@ mod tests {
             "10920/20051" => &[net_card_income_plus_tips_miti_card],
             "10920/10910" => &[tips_lola_paid_via_card],
             "68450/10920" => &[Some(commission_lola)],
-            "20051/10900" => &[debt_to_miti],
+            "20051/10930" => &[debt_to_miti],
             "20051/30500" => &[income_lola_miti],
         )?;
         match validate_acc_constraint(&df) {
diff --git a/src/test_fixtures.rs b/src/test_fixtures.rs
index 1669982..9b69bd7 100644
--- a/src/test_fixtures.rs
+++ b/src/test_fixtures.rs
@@ -316,7 +316,7 @@ pub fn accounting_df_03(sample_date: NaiveDate) -> DataFrame {
         "10920/20051" => &[189.25],
         "10920/10910" => &[0.0],
         "68450/10920" => &[17.99],
-        "20051/10900" => &[145.76],
+        "20051/10930" => &[145.76],
         "20051/30500" => &[42.49],
     )
     .expect("Valid accounting df 03")