diff --git a/src/plugins/imageformats/dds/qddshandler.cpp b/src/plugins/imageformats/dds/qddshandler.cpp
index 0734f4a6327d603adbd0085a354f8023a12201a8..9d44f26460f70e16e143b090d619e6a6db91645f 100644
--- a/src/plugins/imageformats/dds/qddshandler.cpp
+++ b/src/plugins/imageformats/dds/qddshandler.cpp
@@ -41,6 +41,8 @@
 
 #include "ddsheader.h"
 
+#include <cmath>
+
 #ifndef QT_NO_DATASTREAM
 
 QT_BEGIN_NAMESPACE