diff --git a/mythtv/libs/libmythui/mythgesture.cpp b/mythtv/libs/libmythui/mythgesture.cpp
index 37846e4..f6f91da 100644
--- a/mythtv/libs/libmythui/mythgesture.cpp
+++ b/mythtv/libs/libmythui/mythgesture.cpp
@@ -283,7 +283,7 @@ bool MythGesture::record(const QPoint & p)
     int dely = p.y() - points.back().y();
 
     /* step by the greatest delta direction */
-    if (abs(delx) > abs(dely))
+    if (std::abs(delx) > std::abs(dely))
     {
         float iy = points.back().y();
 
diff --git a/mythtv/libs/libmythui/mythpainter.cpp b/mythtv/libs/libmythui/mythpainter.cpp
index f2482f1..6186b3e 100644
--- a/mythtv/libs/libmythui/mythpainter.cpp
+++ b/mythtv/libs/libmythui/mythpainter.cpp
@@ -1,5 +1,6 @@
 #include <stdint.h>
 #include <algorithm>
+#include <cmath>        // std::abs
 
 // QT headers
 #include <QRect>