diff --git a/trunk/ProcessHacker/Build/Installer/Custom_Messages.iss b/trunk/ProcessHacker/Build/Installer/Custom_Messages.iss
index 035850db1..ad8f15054 100644
--- a/trunk/ProcessHacker/Build/Installer/Custom_Messages.iss
+++ b/trunk/ProcessHacker/Build/Installer/Custom_Messages.iss
@@ -1,8 +1,7 @@
 [CustomMessages]
 ;sm=Start Menu, tsk=Task, com=Comment, msg=Message
 ;English
-en.msg_SetupIsRunningWarningInstall=Process Hacker Setup is already running!
-en.msg_SetupIsRunningWarningUninstall=Process Hacker Setup is already running!
+en.msg_SetupIsRunningWarning=Process Hacker Setup is already running!
 en.msg_asknetdown=Process Hacker requires the .NET Framework 2.0. Please download and install the .NET Framework and run setup again. %n%nDo you want to download the .NET Framework 2.0 now?
 en.msg_DeleteLogSettings=Do you also want to delete Process Hacker's logs and settings? %nIf you plan on reinstalling Process Hacker you do not have to delete them.
 en.msg_createkprocesshacker=Creating KProcessHacker service...
@@ -30,8 +29,7 @@ en.sm_readmefile=ReadMe
 en.sm_com_readmefile=Process Hacker's ReadMe
 
 ;Greek
-gr.msg_SetupIsRunningWarningInstall=Η εγκατάσταση του Process Hacker τρέχει ήδη!
-gr.msg_SetupIsRunningWarningUninstall=Η εγκατάσταση του Process Hacker τρέχει ήδη!
+gr.msg_SetupIsRunningWarning=Η εγκατάσταση του Process Hacker τρέχει ήδη!
 gr.msg_asknetdown=Το Process Hacker χρειάζεται το .NET Framework 2.0. Παρακαλώ κατεβάστε και εγκαταστήσετε το .NET Framework και τρέξτε την εγκατάσταση πάλι. %n%nΘέλετε να κατεβάσετε το .NET Framework 2.0 τώρα;
 gr.msg_DeleteLogSettings=Θέλετε να διαγράψετε τις επιλογές και τα αρχεία καταγραφής του Process Hacker; %nΑν σκοπεύετε να εγκαταστήσετε πάλι το Process Hacker δεν χρειάζεται να τα διαγράψετε.
 gr.msg_createkprocesshacker=Δημιουργία της υπηρεσίας KProcessHacker...
diff --git a/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss b/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss
index 0eb086337..cb60288e1 100644
--- a/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss
+++ b/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss
@@ -305,7 +305,7 @@ begin
   // Create a mutex for the installer and if it's already running then expose a message and stop installation
   if CheckForMutexes(installer_mutex_name) then begin
   if not WizardSilent() then
-    MsgBox(ExpandConstant('{cm:msg_SetupIsRunningWarningInstall}'), mbError, MB_OK);
+    MsgBox(ExpandConstant('{cm:msg_SetupIsRunningWarning}'), mbCriticalError, MB_OK);
     Result := False;
   end
   else begin
@@ -335,7 +335,7 @@ begin
   Result := True;
   if CheckForMutexes(installer_mutex_name) then begin
     if not WizardSilent() then
-      MsgBox(ExpandConstant('{cm:msg_SetupIsRunningWarningUninstall}'), mbError, MB_OK);
+      MsgBox(ExpandConstant('{cm:msg_SetupIsRunningWarning}'), mbCriticalError, MB_OK);
       Result := False;
     end
     else begin