diff --git a/configure b/configure
index 7fdd20206..219a3ba2f 100755
--- a/configure
+++ b/configure
@@ -15299,8 +15299,8 @@ $as_echo "$as_me: WARNING: You should install latest cache_check vsn 0.7.0 to us
 fi
 
 if test -n "$VDO_CONFIGURE_WARN"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized 'vdoformat' tool is REQUIRED for VDO logical volume creation!" >&5
-$as_echo "$as_me: WARNING: unrecognized 'vdoformat' tool is REQUIRED for VDO logical volume creation!" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Unrecognized 'vdoformat' tool is REQUIRED for VDO logical volume creation!" >&5
+$as_echo "$as_me: WARNING: Unrecognized 'vdoformat' tool is REQUIRED for VDO logical volume creation!" >&2;}
 fi
 
 
diff --git a/configure.ac b/configure.ac
index 3e9ed25f5..537dc801c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1900,7 +1900,7 @@ AS_IF([test -n "$CACHE_CHECK_VERSION_WARN"],
       [AC_MSG_WARN([You should install latest cache_check vsn 0.7.0 to use lvm2 cache metadata format 2])])
 
 AS_IF([test -n "$VDO_CONFIGURE_WARN"],
-      [AC_MSG_WARN([unrecognized 'vdoformat' tool is REQUIRED for VDO logical volume creation!])])
+      [AC_MSG_WARN([Unrecognized 'vdoformat' tool is REQUIRED for VDO logical volume creation!])])
 
 
 AS_IF([test "$ODIRECT" != yes],