diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt
index 07efaefb74..d76d870bb9 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt
@@ -281,8 +281,10 @@ class AutotuneFragment : DaggerFragment() {
         }
 
         binding.tuneLastrun.setOnClickListener {
-            autotunePlugin.loadLastRun()
-            updateGui()
+            if (!autotunePlugin.calculationRunning) {
+                autotunePlugin.loadLastRun()
+                updateGui()
+            }
         }
         binding.tuneLastrun.paintFlags = binding.tuneLastrun.paintFlags or Paint.UNDERLINE_TEXT_FLAG
     }