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-rw-r--r--src/particles/qquickfriction.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/particles/qquickfriction.cpp b/src/particles/qquickfriction.cpp
index 6d82408707..4802077100 100644
--- a/src/particles/qquickfriction.cpp
+++ b/src/particles/qquickfriction.cpp
@@ -40,6 +40,8 @@
****************************************************************************/
#include "qquickfriction_p.h"
+#include <math.h>
+
QT_BEGIN_NAMESPACE
/*!
\qmltype Friction