diff --git a/Algorithms/DouglasPeucker.cpp b/Algorithms/DouglasPeucker.cpp
index 4075a2265..cd0e1be84 100644
--- a/Algorithms/DouglasPeucker.cpp
+++ b/Algorithms/DouglasPeucker.cpp
@@ -35,6 +35,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <cmath>
 
+#include <algorithm>
 #include <limits>
 
 struct CoordinatePairCalculator