diff --git a/configure.ac b/configure.ac
index 78b5260..0feb329 100644
--- a/configure.ac
+++ b/configure.ac
@@ -103,20 +103,6 @@ DL_LIBS="${LIBS}"
 LIBS="${saved_LIBS}"
 AC_SUBST(DL_LIBS)
 
-saved_LIBS="${LIBS}"
-LIBS=""
-AC_CHECK_LIB([crypt], [crypt])
-CRYPT_LIBS="${LIBS}"
-LIBS="${saved_LIBS}"
-AC_SUBST(CRYPT_LIBS)
-
-saved_LIBS="${LIBS}"
-LIBS=""
-AC_CHECK_LIB([crypto], [HMAC_CTX_init])
-CRYPTO_LIBS="${LIBS}"
-LIBS="${saved_LIBS}"
-AC_SUBST(CRYPTO_LIBS)
-
 saved_LIBS="${LIBS}"
 LIBS=""
 AC_CHECK_LIB([pam], [pam_start])