diff --git a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java
index e21faf6..31acf35 100644
--- a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java
+++ b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java
@@ -22,6 +22,7 @@ import org.apache.kafka.common.config.ConfigDef;
 import org.apache.kafka.common.config.ConfigDef.Importance;
 import org.apache.kafka.common.config.ConfigDef.Type;
 import org.apache.kafka.common.config.ConfigDef.Width;
+import static org.apache.kafka.common.config.ConfigDef.Range.atLeast;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -54,6 +55,7 @@ public class ConnectorConfig extends AbstractConfig {
     public static final String TASKS_MAX_CONFIG = "tasks.max";
     private static final String TASKS_MAX_DOC = "Maximum number of tasks to use for this connector.";
     public static final int TASKS_MAX_DEFAULT = 1;
+    private static final int TASKS_MIN_CONFIG = 1;
     private static final String TASK_MAX_DISPLAY = "Tasks max";
 
     public static final String TOPICS_CONFIG = "topics";
@@ -67,7 +69,7 @@ public class ConnectorConfig extends AbstractConfig {
         config = new ConfigDef()
                 .define(NAME_CONFIG, Type.STRING, Importance.HIGH, NAME_DOC, COMMON_GROUP, 1, Width.MEDIUM, NAME_DISPLAY)
                 .define(CONNECTOR_CLASS_CONFIG, Type.STRING, Importance.HIGH, CONNECTOR_CLASS_DOC, COMMON_GROUP, 2, Width.LONG, CONNECTOR_CLASS_DISPLAY)
-                .define(TASKS_MAX_CONFIG, Type.INT, TASKS_MAX_DEFAULT, Importance.HIGH, TASKS_MAX_DOC, COMMON_GROUP, 3, Width.SHORT, TASK_MAX_DISPLAY)
+                .define(TASKS_MAX_CONFIG, Type.INT, TASKS_MAX_DEFAULT, atLeast(TASKS_MIN_CONFIG), Importance.HIGH, TASKS_MAX_DOC, COMMON_GROUP, 3, Width.SHORT, TASK_MAX_DISPLAY)
                 .define(TOPICS_CONFIG, Type.LIST, TOPICS_DEFAULT, Importance.HIGH, TOPICS_DOC, COMMON_GROUP, 4, Width.LONG, TOPICS_DISPLAY);
     }