diff --git a/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W14.java b/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W14.java
index d7b9fbf..0411062 100755
--- a/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W14.java
+++ b/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W14.java
@@ -59,8 +59,11 @@ public long run(Connection conn, Random gen, WEB3Worker w, int startNumber, int
         String to_address = WEB3Util
                 .convertToAddressString(WEB3Util.randomNumber(1, WEB3Config.configAccountsCount, gen));
         double value = (double) WEB3Util.randomNumber(0, 1000000, gen);
-        String transaction_hash = WEB3Util.convertToTxnHashString(
-                WEB3Util.randomNumber(1, numScale * WEB3Config.configTransactionsCount, gen));
+        int transaction_hash_number = WEB3Util.randomNumber(1, numScale * WEB3Config.configTransactionsCount,
+                gen);
+        // make sure the startNumber is even, to avoid foreign key conflicts with W6
+        transaction_hash_number = transaction_hash_number - (transaction_hash_number % 2);
+        String transaction_hash = WEB3Util.convertToTxnHashString(transaction_hash_number);
         long block_number = WEB3Util.randomNumber(1, numScale * WEB3Config.configBlocksCount, gen);
         long next_block_number = block_number + 1;
 
diff --git a/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W6.java b/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W6.java
index 9324e20..6c1361e 100755
--- a/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W6.java
+++ b/src/com/olxpbenchmark/benchmarks/web3benchmark/procedures/W6.java
@@ -51,8 +51,11 @@ public long run(Connection conn, Random gen, WEB3Worker w, int startNumber, int
         // initializing all prepared statements
         query_stmt = this.getPreparedStatement(conn, query_stmtSQL);
 
+        // make sure the startNumber is odd, to avoid foreign key conflicts with W14
+        startNumber = startNumber - (startNumber % 2) + 1;
         String hash = WEB3Util.convertToTxnHashString(startNumber % (WEB3Config.configTransactionsCount * numScale));
 
+        // Setting the parameters for the query
         query_stmt.setString(1, hash);
         if (LOG.isDebugEnabled()) {
             LOG.debug(queryToString(query_stmt));