diff --git a/etc/mapping-rfc.txt b/etc/mapping-rfc.txt
index 0f9dd8d..2c48bbe 100644
--- a/etc/mapping-rfc.txt
+++ b/etc/mapping-rfc.txt
@@ -1,6 +1,6 @@
 x010080  SSL_CK_RC4_128_WITH_MD5              
 x020080  SSL_CK_RC4_128_EXPORT40_WITH_MD5     
-x030080  SSL_CK_RC2_128_CBC_WITH_MD5	      
+x030080  SSL_CK_RC2_128_CBC_WITH_MD5      
 x040080  SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5
 x050080  SSL_CK_IDEA_128_CBC_WITH_MD5       
 x060040  SSL_CK_DES_64_CBC_WITH_MD5