diff --git a/Plugins/Flow.Launcher.Plugin.ProcessKiller/Main.cs b/Plugins/Flow.Launcher.Plugin.ProcessKiller/Main.cs
index 3eff7e3984d..be2a2dd6673 100644
--- a/Plugins/Flow.Launcher.Plugin.ProcessKiller/Main.cs
+++ b/Plugins/Flow.Launcher.Plugin.ProcessKiller/Main.cs
@@ -1,7 +1,6 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Linq;
 using Flow.Launcher.Infrastructure;
-using System.Threading.Tasks;
 
 namespace Flow.Launcher.Plugin.ProcessKiller
 {
@@ -89,7 +88,8 @@ private List<Result> CreateResultsFromQuery(Query query)
                     Action = (c) =>
                     {
                         processHelper.TryKill(p);
-                        _ = DelayAndReQueryAsync(query.RawQuery); // Re-query after killing process to refresh process list
+                        // Re-query to refresh process list
+                        _context.API.ChangeQuery(query.RawQuery, true);
                         return true;
                     }
                 });
@@ -114,7 +114,8 @@ private List<Result> CreateResultsFromQuery(Query query)
                         {
                             processHelper.TryKill(p.Process);
                         }
-                        _ = DelayAndReQueryAsync(query.RawQuery); // Re-query after killing process to refresh process list
+                        // Re-query to refresh process list
+                        _context.API.ChangeQuery(query.RawQuery, true);
                         return true;
                     }
                 });
@@ -122,11 +123,5 @@ private List<Result> CreateResultsFromQuery(Query query)
 
             return sortedResults;
         }
-
-        private static async Task DelayAndReQueryAsync(string query)
-        {
-            await Task.Delay(500);
-            _context.API.ChangeQuery(query, true);
-        }
     }
 }
diff --git a/Plugins/Flow.Launcher.Plugin.ProcessKiller/ProcessHelper.cs b/Plugins/Flow.Launcher.Plugin.ProcessKiller/ProcessHelper.cs
index 0932955d6bc..0acc39fbb1c 100644
--- a/Plugins/Flow.Launcher.Plugin.ProcessKiller/ProcessHelper.cs
+++ b/Plugins/Flow.Launcher.Plugin.ProcessKiller/ProcessHelper.cs
@@ -1,4 +1,4 @@
-using Flow.Launcher.Infrastructure;
+using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Infrastructure.Logger;
 using System;
 using System.Collections.Generic;
@@ -75,6 +75,7 @@ public void TryKill(Process p)
                 if (!p.HasExited)
                 {
                     p.Kill();
+                    p.WaitForExit(50);
                 }
             }
             catch (Exception e)