diff --git a/dist/changes-4.9.0.md b/dist/changes-4.9.0.md
index 1397bfe03c2..8feed6ec314 100644
--- a/dist/changes-4.9.0.md
+++ b/dist/changes-4.9.0.md
@@ -14,6 +14,7 @@ General
 * Added option to run external tools in build or run environment of
   active project (QTCREATORBUG-18394, QTCREATORBUG-19892)
 * Improved selection colors in dark themes (QTCREATORBUG-18888)
+* Added -temporarycleansettings (alias -tcs) command line option
 
 Editing
 
diff --git a/doc/src/howto/creator-only/creator-cli.qdoc b/doc/src/howto/creator-only/creator-cli.qdoc
index 8fec7376783..0e3114dad5a 100644
--- a/doc/src/howto/creator-only/creator-cli.qdoc
+++ b/doc/src/howto/creator-only/creator-cli.qdoc
@@ -151,6 +151,11 @@
             \li Override the default path from where user-independent settings are read
                 (for example written by the installer).
 
+        \row
+            \li -temporarycleansettings
+            \li Use clean settings for debug or testing reasons. The settings
+                will be deleted when \QC exits.
+
         \row
             \li -color <color>
             \li Core plugin: override the selected UI color.
diff --git a/src/app/main.cpp b/src/app/main.cpp
index d946f1f201c..27412c3d062 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -81,7 +81,7 @@ const char fixedOptionsC[] =
 "    -client                       Attempt to connect to already running first instance\n"
 "    -settingspath <path>          Override the default path where user settings are stored\n"
 "    -installsettingspath <path>   Override the default path from where user-independent settings are read\n"
-"    -temporarycleansetting        Use clean settings for debug or testing reasons\n"
+"    -temporarycleansettings       Use clean settings for debug or testing reasons\n"
 "    -pid <pid>                    Attempt to connect to instance given by pid\n"
 "    -block                        Block until editor is closed\n"
 "    -pluginpath <path>            Add a custom search path for plugins\n";