diff --git a/jOOQ/src/main/java/org/jooq/tools/jdbc/MockStatement.java b/jOOQ/src/main/java/org/jooq/tools/jdbc/MockStatement.java
index 11808dfbf0..466cc4ba6f 100644
--- a/jOOQ/src/main/java/org/jooq/tools/jdbc/MockStatement.java
+++ b/jOOQ/src/main/java/org/jooq/tools/jdbc/MockStatement.java
@@ -229,7 +229,7 @@ public class MockStatement extends JDBC41Statement implements CallableStatement
     @Override
     public int getUpdateCount() throws SQLException {
         checkNotClosed();
-        return (result != null && result.length > 0) ? result[resultIndex].rows : 0;
+        return (result != null && resultIndex < result.length) && result[resultIndex].data == null ? result[resultIndex].rows : -1;
     }
 
     @Override