diff --git a/src/benchmark/java/org/mariadb/jdbc/Common.java b/src/benchmark/java/org/mariadb/jdbc/Common.java
index 28aec8ce5..a4ab37823 100644
--- a/src/benchmark/java/org/mariadb/jdbc/Common.java
+++ b/src/benchmark/java/org/mariadb/jdbc/Common.java
@@ -45,7 +45,7 @@ public static class MyState {
 
 
     @Param({
-            //"mysql",
+            "mysql",
             "mariadb"})
     String driver;
     @Setup(Level.Trial)
diff --git a/src/benchmark/java/org/mariadb/jdbc/Select_1000_Rows.java b/src/benchmark/java/org/mariadb/jdbc/Select_1000_Rows.java
index 9aecb14f5..9e8e167d6 100644
--- a/src/benchmark/java/org/mariadb/jdbc/Select_1000_Rows.java
+++ b/src/benchmark/java/org/mariadb/jdbc/Select_1000_Rows.java
@@ -7,30 +7,29 @@
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.infra.Blackhole;
 
 public class Select_1000_Rows extends Common {
   private static final String sql =
       "select seq, 'abcdefghijabcdefghijabcdefghijaa' from seq_1_to_1000";
 
   @Benchmark
-  public int text(MyState state) throws Throwable {
-    return run(state.connectionText);
+  public void text(MyState state, Blackhole blackhole) throws Throwable {
+    run(state.connectionText, blackhole);
   }
 
   @Benchmark
-  public int binary(MyState state) throws Throwable {
-    return run(state.connectionBinary);
+  public void binary(MyState state, Blackhole blackhole) throws Throwable {
+    run(state.connectionBinary, blackhole);
   }
 
-  private int run(Connection con) throws Throwable {
+  private void run(Connection con, Blackhole blackhole) throws Throwable {
     try (PreparedStatement st = con.prepareStatement(sql)) {
       ResultSet rs = st.executeQuery();
-      int i = 0;
       while (rs.next()) {
-        i = rs.getInt(1);
-        rs.getString(2);
+        blackhole.consume(rs.getInt(1));
+        blackhole.consume(rs.getString(2));
       }
-      return i;
     }
   }
 }
diff --git a/src/benchmark/java/org/mariadb/jdbc/Select_100_cols.java b/src/benchmark/java/org/mariadb/jdbc/Select_100_cols.java
index 4e256fdfb..7bd4d5c4a 100644
--- a/src/benchmark/java/org/mariadb/jdbc/Select_100_cols.java
+++ b/src/benchmark/java/org/mariadb/jdbc/Select_100_cols.java
@@ -6,40 +6,40 @@
 import java.sql.*;
 import java.sql.Connection;
 import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.infra.Blackhole;
 
 public class Select_100_cols extends Common {
 
   @Benchmark
-  public int[] text(MyState state) throws Throwable {
-    return run(state.connectionText);
+  public void text(MyState state, Blackhole blackhole) throws Throwable {
+    run(state.connectionText, blackhole);
   }
 
   @Benchmark
-  public int[] binary(MyState state) throws Throwable {
-    return run(state.connectionBinary);
+  public void binary(MyState state, Blackhole blackhole) throws Throwable {
+    run(state.connectionBinary, blackhole);
   }
 
   @Benchmark
-  public int[] binaryNoCache(MyState state) throws Throwable {
-    return run(state.connectionBinaryNoCache);
+  public void binaryNoCache(MyState state, Blackhole blackhole) throws Throwable {
+    run(state.connectionBinaryNoCache, blackhole);
   }
 
   @Benchmark
-  public int[] binaryNoPipeline(MyState state) throws Throwable {
-    return run(state.connectionBinaryNoPipeline);
+  public void binaryNoPipeline(MyState state, Blackhole blackhole) throws Throwable {
+    run(state.connectionBinaryNoPipeline, blackhole);
   }
 
 
-  private int[] run(Connection con) throws Throwable {
+  private void run(Connection con, Blackhole blackhole) throws Throwable {
 
     try (PreparedStatement prep = con.prepareStatement("select * FROM test100")) {
-      ResultSet rs = prep.executeQuery();
-      rs.next();
-      int[] objs = new int[100];
-      for (int i = 0; i < 100; i++) {
-        objs[i] = rs.getInt(i + 1);
+      try (ResultSet rs = prep.executeQuery()) {
+        rs.next();
+        for (int i = 0; i < 100; i++) {
+          blackhole.consume(rs.getInt(i + 1));
+        }
       }
-      return objs;
     }
   }