diff --git a/lib-install.sh b/lib-install.sh
index b926a5e..d4b95fa 100755
--- a/lib-install.sh
+++ b/lib-install.sh
@@ -413,7 +413,7 @@ install_gdm_theme() {
   if check_theme_file "${COMMON_CSS_FILE}"; then # CSS-based theme
     install_beggy_blur
     install_shelly "${colors[0]}" "${opacities[0]}" "${alts[0]}" "${themes[0]}" "${icon}" "${WHITESUR_GS_DIR}"
-    sed ${SED_OPT} "s|assets|${WHITESUR_GS_DIR}/assets|" "${WHITESUR_GS_DIR}/gnome-shell.css"
+    sed $SED_OPT "s|assets|${WHITESUR_GS_DIR}/assets|" "${WHITESUR_GS_DIR}/gnome-shell.css"
 
     if check_theme_file "${UBUNTU_CSS_FILE}"; then
       TARGET="${UBUNTU_CSS_FILE}"
@@ -430,7 +430,7 @@ install_gdm_theme() {
   else # GR-based theme
     install_beggy_blur
     install_shelly "${colors[0]}" "${opacities[0]}" "${alts[0]}" "${themes[0]}" "${icon}" "${WHITESUR_TMP_DIR}/shelly"
-    sed ${SED_OPT} "s|assets|resource:///org/gnome/shell/theme/assets|" "${WHITESUR_TMP_DIR}/shelly/gnome-shell.css"
+    sed $SED_OPT "s|assets|resource:///org/gnome/shell/theme/assets|" "${WHITESUR_TMP_DIR}/shelly/gnome-shell.css"
 
     if check_theme_file "$POP_OS_GR_FILE"; then
       TARGET="${POP_OS_GR_FILE}"
@@ -554,18 +554,18 @@ gtk_base() {
   cp -rf "${THEME_SRC_DIR}/sass/_gtk-base.scss" "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
 
   # Theme base options
-  sed ${SED_OPT} "/\$laptop/s/false/${compact}/"                                "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
+  sed $SED_OPT "/\$laptop/s/false/${compact}/"                                "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
 
   if [[ "${opacity}" == 'solid' ]]; then
-    sed ${SED_OPT} "/\$trans/s/true/false/"                                     "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
+    sed $SED_OPT "/\$trans/s/true/false/"                                     "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
   fi
 
   if [[ "${color}" == 'light' && ${opacity} == 'solid' ]]; then
-    sed ${SED_OPT} "/\$black/s/false/true/"                                     "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
+    sed $SED_OPT "/\$black/s/false/true/"                                     "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
   fi
 
   if [[ "${theme}" != '' ]]; then
-    sed ${SED_OPT} "/\$theme/s/default/${theme}/"                               "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
+    sed $SED_OPT "/\$theme/s/default/${theme}/"                               "${THEME_SRC_DIR}/sass/_gtk-base-temp.scss"
   fi
 }
 
@@ -580,37 +580,37 @@ customize_theme() {
   # Change gnome-shell panel transparency
   if [[ "${panel_opacity}" != 'default' ]]; then
     prompt -w "Changing panel transparency ..."
-    sed ${SED_OPT} "/\$panel_opacity/s/0.15/0.${panel_opacity}/"                "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
+    sed $SED_OPT "/\$panel_opacity/s/0.15/0.${panel_opacity}/"                "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
   fi
 
   # Change gnome-shell show apps button style
   if [[ "${showapps_normal}" == 'true' ]]; then
     prompt -w "Changing gnome-shell show apps button style ..."
-    sed ${SED_OPT} "/\$showapps_button/s/bigsur/normal/"                        "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
+    sed $SED_OPT "/\$showapps_button/s/bigsur/normal/"                        "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
   fi
 
   # Change Nautilus sidarbar size
   if [[ "${sidebar_size}" != 'default' ]]; then
     prompt -w "Changing Nautilus sidebar size ..."
-    sed ${SED_OPT} "/\$sidebar_size/s/200px/${sidebar_size}px/"                 "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
+    sed $SED_OPT "/\$sidebar_size/s/200px/${sidebar_size}px/"                 "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
   fi
 
   # Change Nautilus style
   if [[ "${nautilus_style}" != 'stable' ]]; then
     prompt -w "Changing Nautilus style ..."
-    sed ${SED_OPT} "/\$nautilus_style/s/stable/${nautilus_style}/"              "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
+    sed $SED_OPT "/\$nautilus_style/s/stable/${nautilus_style}/"              "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
   fi
 
   # Change Nautilus titlebutton placement style
   if [[ "${right_placement}" == 'true' ]]; then
     prompt -w "Changing Nautilus titlebutton placement style ..."
-    sed ${SED_OPT} "/\$placement/s/left/right/"                                 "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
+    sed $SED_OPT "/\$placement/s/left/right/"                                 "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
   fi
 
   # Change maximized window radius
   if [[ "${max_round}" == 'true' ]]; then
     prompt -w "Changing maximized window style ..."
-    sed ${SED_OPT} "/\$max_window_style/s/square/round/"                        "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
+    sed $SED_OPT "/\$max_window_style/s/square/round/"                        "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
   fi
 }