diff --git a/test/test_delegate.cpp b/test/test_delegate.cpp
index 46ab89e6..eaf202d9 100644
--- a/test/test_delegate.cpp
+++ b/test/test_delegate.cpp
@@ -35,6 +35,7 @@ SOFTWARE.
 
 #include <vector>
 #include <functional>
+#include <algorithm>
 
 namespace
 {
diff --git a/test/test_delegate_cpp03.cpp b/test/test_delegate_cpp03.cpp
index 903f872f..27ac32a9 100644
--- a/test/test_delegate_cpp03.cpp
+++ b/test/test_delegate_cpp03.cpp
@@ -34,6 +34,8 @@ SOFTWARE.
 #include "etl/vector.h"
 
 #include <vector>
+#include <functional>
+#include <algorithm>
 
 namespace
 {