diff --git a/toolkit/offchain/src/csl.rs b/toolkit/offchain/src/csl.rs
index 8c14f8648..23e1dee1e 100644
--- a/toolkit/offchain/src/csl.rs
+++ b/toolkit/offchain/src/csl.rs
@@ -543,17 +543,14 @@ impl TransactionBuilderExt for TransactionBuilder {
 		try_balance(self, &selected, ctx)
 			.map_err(|e| JsError::from_str(&format!("Could not balance transaction. Usually it means that the payment key does not own UTXO set required to cover transaction outputs and fees or to provide collateral. Cause: {}", e)))?;
 
-		#[cfg(test)]
-		{
-			assert!(
-				balanced_transaction.body().collateral().is_some(),
-				"BUG: Balanced transaction should have collateral set."
-			);
-			assert!(
-				balanced_transaction.body().collateral_return().is_some(),
-				"BUG: Balanced transaction should have collateral returned."
-			);
-		}
+		debug_assert!(
+			balanced_transaction.body().collateral().is_some(),
+			"BUG: Balanced transaction should have collateral set."
+		);
+		debug_assert!(
+			balanced_transaction.body().collateral_return().is_some(),
+			"BUG: Balanced transaction should have collateral returned."
+		);
 
 		Ok(balanced_transaction)
 	}