diff --git a/common/autoconf/jdk-options.m4 b/common/autoconf/jdk-options.m4
--- a/common/autoconf/jdk-options.m4
+++ b/common/autoconf/jdk-options.m4
@@ -528,7 +528,7 @@
     if test "x$USER_RELEASE_SUFFIX" = x; then
       BUILD_DATE=`date '+%Y_%m_%d_%H_%M'`
       # Avoid [:alnum:] since it depends on the locale.
-      CLEAN_USERNAME=`echo "$USER" | $TR -d -c 'abcdefghijklmnopqrstuvqxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'`
+      CLEAN_USERNAME=`echo "$USER" | $TR -d -c 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'`
       USER_RELEASE_SUFFIX=`echo "${CLEAN_USERNAME}_${BUILD_DATE}" | $TR 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
     fi
   fi