diff --git a/configure b/configure
index 939fccb..bc16def 100755
--- a/configure
+++ b/configure
@@ -55,13 +55,13 @@ check_compile_run() {
 
 usage() {
 	echo "supported arguments"
-	echo "--prefix=/path 		default: $prefix"
-	echo "--exec_prefix=/path	default: $prefix/bin"
-	echo "--bindir=/path		default: $prefix/bin"
-	echo "--libdir=/path		default: $prefix/lib"
-	echo "--includedir=/path	default: $prefix/include"
-	echo "--sysconfdir=/path	default: $prefix/etc"
-	echo "--ignore-cve		default: no"
+	echo "--prefix=/path            default: $prefix"
+	echo "--exec_prefix=/path       default: $prefix/bin"
+	echo "--bindir=/path            default: $prefix/bin"
+	echo "--libdir=/path            default: $prefix/lib"
+	echo "--includedir=/path        default: $prefix/include"
+	echo "--sysconfdir=/path        default: $prefix/etc"
+	echo "--ignore-cve              default: no"
 	echo "	if set to yes ignores CVE-2015-3887 and makes it possible"
 	echo "	to preload from current dir (insecure)"
 	ismac && isx86_64 && echo "--fat-binary : build for both i386 and x86_64 architectures on 64-bit Macs"