diff --git a/lsb_release/src/lsb_release b/lsb_release/src/lsb_release
index fb4cbc5..30c6c28 100755
--- a/lsb_release/src/lsb_release
+++ b/lsb_release/src/lsb_release
@@ -244,7 +244,7 @@ EASE ($DISTRIB_CODENAME)"
         NO=""                    # is Description string syntax correct ?
         if [ -z "$DISTRIB_DESCRIPTION" ]                                      \
             || [ -n "$(echo $DISTRIB_DESCRIPTION |                            \
-                       sed -e "s/.*$DESCSTR_DELI.*//")" ]
+                       sed -e "s/.*$DESCSTR_DELI.*//I")" ]
         then
             TMP_DISTRIB_DESC=$(head -n 1 $FILENAME 2>/dev/null)
             [ -z "$DISTRIB_DESCRIPTION" ]                                     \
@@ -259,7 +259,7 @@ EASE ($DISTRIB_CODENAME)"
             NO="y"
         else                           # Do simple check
             [ -n "$(echo $TMP_DISTRIB_DESC |                                  \
-                    sed -e "s/.*$DESCSTR_DELI.*//")" ]                        \
+                    sed -e "s/.*$DESCSTR_DELI.*//I")" ]                       \
                 && NO="y"
         fi
 
@@ -306,13 +306,13 @@ DisplayID() {
 ## Linux could be part of the distro name (i.e. Turbolinux) or a separate word
 ## set before, after...
 ## also expect a delimiter ( i.e. "release" )
-        if [ -n "$(echo $TMP_DISTRIB_DESC | sed "s/.*$DESCSTR_DELI.*//")" ]
+        if [ -n "$(echo $TMP_DISTRIB_DESC | sed "s/.*$DESCSTR_DELI.*//I")" ]
         then
             DISTRIB_ID=$MSG_NA
         else
             DISTRIB_ID=$(echo " $TMP_DISTRIB_DESC"                            \
             | sed -e "s/[[:blank:]][Ll][Ii][Nn][Uu][Xx][[:blank:]]/ /g"       \
-            -e "s/\(.*\)[[:blank:]]$DESCSTR_DELI.*/\1/" -e "s/[[:blank:]]//g")
+            -e "s/\(.*\)[[:blank:]]$DESCSTR_DELI.*/\1/I" -e "s/[[:blank:]]//g")
         fi
     fi
     if [ -z "$ARG_S" ]
@@ -343,7 +343,7 @@ DisplayRelease() {
     if [ -z "$DISTRIB_RELEASE" ]
     then                       # parse the "$DISTRIB_DESCRIPTION" string
         DISTRIB_RELEASE=$(echo "$TMP_DISTRIB_DESC" |                          \
-      sed -e "s/.*$DESCSTR_DELI[[:blank:]]*\([[:digit:]][[:graph:]]*\).*/\1/" )
+      sed -e "s/.*$DESCSTR_DELI[[:blank:]]*\([[:digit:]][[:graph:]]*\).*/\1/I" )
         [ "$DISTRIB_RELEASE" = "$TMP_DISTRIB_DESC" ]                          \
             || [ -z "$DISTRIB_RELEASE" ]                                      \
             && DISTRIB_RELEASE=$MSG_NA
@@ -361,7 +361,7 @@ DisplayCodename() {
     if [ -z "$DISTRIB_CODENAME" ]
     then                       # parse the "$DISTRIB_DESCRIPTION" string
         DISTRIB_CODENAME=$(echo "$TMP_DISTRIB_DESC" |                         \
-                           sed -e "s/.*$DESCSTR_DELI.*(\(.*\)).*/\1/")
+                           sed -e "s/.*$DESCSTR_DELI.*(\(.*\)).*/\1/I")
         [ "$DISTRIB_CODENAME" = "$TMP_DISTRIB_DESC" ]                         \
             || [ -z "$DISTRIB_CODENAME" ]                                     \
             && DISTRIB_CODENAME=$MSG_NA