diff --git a/qrenderdoc/Widgets/RangeHistogram.cpp b/qrenderdoc/Widgets/RangeHistogram.cpp
index a0e5733f3..33191a8bf 100644
--- a/qrenderdoc/Widgets/RangeHistogram.cpp
+++ b/qrenderdoc/Widgets/RangeHistogram.cpp
@@ -62,10 +62,11 @@ void RangeHistogram::setRange(float min, float max)
 
 bool RangeHistogram::ValidRange() const
 {
-  if(isinf(m_WhitePoint) || isnan(m_WhitePoint) || isinf(m_BlackPoint) || isnan(m_BlackPoint) ||
-     isinf(m_RangeMax) || isnan(m_RangeMax) || isinf(m_RangeMin) || isnan(m_RangeMin) ||
-     isinf(m_RangeMax - m_RangeMin) || isnan(m_RangeMax - m_RangeMin) ||
-     isinf(m_WhitePoint - m_BlackPoint) || isnan(m_WhitePoint - m_BlackPoint))
+  if(std::isinf(m_WhitePoint) || std::isnan(m_WhitePoint) || std::isinf(m_BlackPoint) ||
+     std::isnan(m_BlackPoint) || std::isinf(m_RangeMax) || std::isnan(m_RangeMax) ||
+     std::isinf(m_RangeMin) || std::isnan(m_RangeMin) || std::isinf(m_RangeMax - m_RangeMin) ||
+     std::isnan(m_RangeMax - m_RangeMin) || std::isinf(m_WhitePoint - m_BlackPoint) ||
+     std::isnan(m_WhitePoint - m_BlackPoint))
   {
     return false;
   }