diff --git a/src/GLideNHQ/TextureFilters_xbrz.cpp b/src/GLideNHQ/TextureFilters_xbrz.cpp
index edd8e44d..9fd57e59 100644
--- a/src/GLideNHQ/TextureFilters_xbrz.cpp
+++ b/src/GLideNHQ/TextureFilters_xbrz.cpp
@@ -17,6 +17,7 @@
 #include <cassert>
 #include <algorithm>
 #include <vector>
+#include <cmath>
 
 namespace
 {
diff --git a/src/gDP.cpp b/src/gDP.cpp
index 31077cc2..17cabc5a 100644
--- a/src/gDP.cpp
+++ b/src/gDP.cpp
@@ -1,5 +1,6 @@
 #include <assert.h>
 #include <algorithm>
+#include <cmath>
 #include "GLideN64.h"
 #include "N64.h"
 #include "GBI.h"