diff --git a/RtAudio.cpp b/RtAudio.cpp
index af7d205..778cbf2 100644
--- a/RtAudio.cpp
+++ b/RtAudio.cpp
@@ -45,6 +45,7 @@
 #include <cstdlib>
 #include <cstring>
 #include <climits>
+#include <algorithm>
 
 // Static variable definitions.
 const unsigned int RtApi::MAX_SAMPLE_RATES = 14;