diff --git a/test/extended_euclidean_test.cpp b/test/extended_euclidean_test.cpp
index 17b15e3..45b9f02 100644
--- a/test/extended_euclidean_test.cpp
+++ b/test/extended_euclidean_test.cpp
@@ -47,4 +47,9 @@ int main()
 
     return 0;
 }
+#else
+int main()
+{
+    return 0;
+}
 #endif
diff --git a/test/mod_inverse_test.cpp b/test/mod_inverse_test.cpp
index 2516ca0..7367d15 100644
--- a/test/mod_inverse_test.cpp
+++ b/test/mod_inverse_test.cpp
@@ -58,4 +58,9 @@ int main()
 
     return 0;
 }
+#else
+int main()
+{
+  return 0;
+}
 #endif