diff --git a/README.md b/README.md
index 70ec89d1d..b6a600b9c 100644
--- a/README.md
+++ b/README.md
@@ -280,7 +280,7 @@ The author of the Silk icon set is Mark James.
        Retraction options for multi-extruder setups:
         --retract-length-toolchange
                             Length of retraction in mm when disabling tool (default: 1)
-        --retract-restart-extra-toolchnage
+        --retract-restart-extra-toolchange
                             Additional amount of filament in mm to push after
                             switching tool (default: 0)
     
diff --git a/slic3r.pl b/slic3r.pl
index bea11ce1b..4b039f5fc 100755
--- a/slic3r.pl
+++ b/slic3r.pl
@@ -432,7 +432,7 @@ $j
    Retraction options for multi-extruder setups:
     --retract-length-toolchange
                         Length of retraction in mm when disabling tool (default: $config->{retract_length}[0])
-    --retract-restart-extra-toolchnage
+    --retract-restart-extra-toolchange
                         Additional amount of filament in mm to push after
                         switching tool (default: $config->{retract_restart_extra}[0])