diff --git a/core_functions.sh b/core_functions.sh
index 5d85199..843dab3 100644
--- a/core_functions.sh
+++ b/core_functions.sh
@@ -560,7 +560,7 @@ function usage () {
   printf " "$BOLDVERT"-c"$NORMAL" : install gtk themes and icons\n"
   printf " "$BOLDVERT"-w"$NORMAL" : install Nitrogen + remove desktop management from caja\n"
   printf " "$BOLDVERT"-d"$NORMAL" : install DNS Cache Unbound\n"
-  printf " "$BOLDVERT"-k"$NORMAL" : install cardreader apps\n"
+  printf " "$BOLDVERT"-q"$NORMAL" : install cardreader apps\n"
   printf " "$BOLDVERT"-s"$NORMAL" : install Solaar for Logitech devices\n"
   printf " "$BOLDVERT"-t"$NORMAL" : install TLP for Laptops and low energy usage\n"
   printf " "$BOLDVERT"-n"$NORMAL" : install lastest Nvidia graphic drivers\n"
diff --git a/yggdrasil.sh b/yggdrasil.sh
index e4a5466..27552dc 100755
--- a/yggdrasil.sh
+++ b/yggdrasil.sh
@@ -50,7 +50,7 @@ echo "--[ Yggdrasil log ]--[ "$cDate" ]--[ "$cTime" ]-----------------------" >>
 #
 # arguments/options management with getopts
 
-while getopts ":h,v,f,c,u,a,d,k,s,t,n,w,p,T" option; do
+while getopts ":h,v,f,c,u,a,d,q,s,t,n,w,p,T" option; do
   case "$option" in
     T) #test purpose only
       yggInit
@@ -185,7 +185,7 @@ while getopts ":h,v,f,c,u,a,d,k,s,t,n,w,p,T" option; do
       enableUnbound
       exit
       ;;
-    k) # cardreader
+    q) # cardreader
       yggInit
       updateSystem
       installCardReader