--- configure.orig
+++ configure
@@ -22674,17 +22674,14 @@
   withval=$with_gtk_version; { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_gtk_version" >&5
 $as_echo "$with_gtk_version" >&6; }
     case $with_gtk_version in
-      *)
-        if test "x${with_gtk_version:0:1}" == "x2"
-        then
+      2*)
           check_for_3=false
           check_for_2=$with_gtk_version
-        elif test "x${with_gtk_version:0:1}" == "x3"
-        then
+      ;;
+      3*)
           check_for_3=$with_gtk_version
           check_for_2=false
-        fi
-        ;;
+      ;;
     esac
 
 else