diff --git a/configure b/configure
index fc3ba27a1..569b38a84 100755
--- a/configure
+++ b/configure
@@ -16821,7 +16821,7 @@ fi
 
 done
 
-if test $ac_cv_lib_ldns_ldns_buffer_copy = yes \
+if test $ac_cv_func_ldns_ldns_buffer_copy = yes \
     -a $ac_cv_func_ldns_key_buf2rsa_raw = yes \
     -a $ac_cv_func_ldns_get_random = yes \
     -a $ac_cv_header_ldns_ldns_h = yes \
diff --git a/configure.ac b/configure.ac
index dada23f99..28d7cf7b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -762,7 +762,7 @@ AC_CHECK_HEADERS([ldns/ldns.h],,[
 #include <ws2tcpip.h>
 #endif
 ])
-if test $ac_cv_lib_ldns_ldns_buffer_copy = yes \
+if test $ac_cv_func_ldns_ldns_buffer_copy = yes \
     -a $ac_cv_func_ldns_key_buf2rsa_raw = yes \
     -a $ac_cv_func_ldns_get_random = yes \
     -a $ac_cv_header_ldns_ldns_h = yes \