diff --git a/bin/tests/system/feature-test.c b/bin/tests/system/feature-test.c
index 647db428a3..c27b5af23c 100644
--- a/bin/tests/system/feature-test.c
+++ b/bin/tests/system/feature-test.c
@@ -21,11 +21,14 @@
 
 #include <isc/fips.h>
 #include <isc/md.h>
+#include <isc/mem.h>
 #include <isc/net.h>
 #include <isc/util.h>
 
 #include <dns/edns.h>
 
+#include <dst/dst.h>
+
 static void
 usage(void) {
 	fprintf(stderr, "usage: feature-test <arg>\n");
@@ -43,6 +46,7 @@ usage(void) {
 	fprintf(stderr, "\t--have-libxml2\n");
 	fprintf(stderr, "\t--ipv6only=no\n");
 	fprintf(stderr, "\t--md5\n");
+	fprintf(stderr, "\t--rsasha1\n");
 	fprintf(stderr, "\t--tsan\n");
 	fprintf(stderr, "\t--with-dlz-filesystem\n");
 	fprintf(stderr, "\t--with-libidn2\n");
@@ -209,6 +213,17 @@ main(int argc, char **argv) {
 #endif /* defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY) */
 	}
 
+	if (strcasecmp(argv[1], "--rsasha1") == 0) {
+		int answer;
+		isc_mem_t *mctx = NULL;
+		isc_mem_create(&mctx);
+		dst_lib_init(mctx, NULL);
+		answer = dst_algorithm_supported(DST_ALG_RSASHA1) ? 0 : 1;
+		dst_lib_destroy();
+		isc_mem_detach(&mctx);
+		return (answer);
+	}
+
 	if (strcmp(argv[1], "--with-dlz-filesystem") == 0) {
 #ifdef DLZ_FILESYSTEM
 		return (0);