diff --git a/src/main/java/com/r35157/nenjim/kicker/Kicker.java b/src/main/java/com/r35157/nenjim/kicker/Kicker.java
index 6bd7923..89a27ce 100644
--- a/src/main/java/com/r35157/nenjim/kicker/Kicker.java
+++ b/src/main/java/com/r35157/nenjim/kicker/Kicker.java
@@ -1,22 +1,24 @@
 package com.r35157.nenjim.kicker;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.HashMap;
 
 public interface Kicker {
     /**
      * Starts a process based on the provided fully qualified interface name.
-     * The actual implementation that is run is binded according to the Context.
+     * The actual implementation that is run is bound according to the Context.
      *
      * @param fqInterfaceName the fully qualified interface name for the actual class to start as a process. The interface must extend the {@code NenjimProcess} interface.
      */
-    void startProcess(String fqInterfaceName);
+    void startProcess(@NotNull String fqInterfaceName);
 
     /**
      * Provides a map of all running processes managed by the NenjimHub, keyed by the processId.
      *
      * @return a map of {@code NenjimProcess} running processes
      */
-    HashMap<Integer, NenjimProcess> getRunningProcesses();
+    @NotNull HashMap<Integer, NenjimProcess> getRunningProcesses();
 
     /**
      * A no-operation (noop). This method does nothing.