diff --git a/tests/unit_tests/unbound.cpp b/tests/unit_tests/unbound.cpp
index 25026ec5..666f6812 100644
--- a/tests/unit_tests/unbound.cpp
+++ b/tests/unit_tests/unbound.cpp
@@ -30,6 +30,8 @@
 
 #include "gtest/gtest.h"
 
+#ifdef STATICLIB
+
 extern "C" int dnskey_algo_id_is_supported(int);
 
 TEST(unbound, supported_algorithms)
@@ -47,3 +49,5 @@ TEST(unbound, supported_algorithms)
   ASSERT_TRUE(dnskey_algo_id_is_supported(13));
 }
 
+#endif
+