diff --git a/core/che-core-api-core/src/main/java/org/eclipse/che/api/core/jsonrpc/commons/RequestHandlerManager.java b/core/che-core-api-core/src/main/java/org/eclipse/che/api/core/jsonrpc/commons/RequestHandlerManager.java
index 745c470d2cc..3b0bd464d0e 100644
--- a/core/che-core-api-core/src/main/java/org/eclipse/che/api/core/jsonrpc/commons/RequestHandlerManager.java
+++ b/core/che-core-api-core/src/main/java/org/eclipse/che/api/core/jsonrpc/commons/RequestHandlerManager.java
@@ -194,8 +194,10 @@ public synchronized boolean deregister(String method) {
         break;
       case NONE_TO_NONE:
         noneToNoneHandlers.remove(method);
+        break;
       case ONE_TO_PROMISE_ONE:
         oneToPromiseOneHandlers.remove(method);
+        break;
     }
 
     return true;