diff --git a/libsrc/hyperion/ImageProcessorFactory.cpp b/libsrc/hyperion/ImageProcessorFactory.cpp
index 70987845..a47e532f 100644
--- a/libsrc/hyperion/ImageProcessorFactory.cpp
+++ b/libsrc/hyperion/ImageProcessorFactory.cpp
@@ -1,4 +1,7 @@
 
+// STL includes
+#include <cmath>
+
 // Hyperion includes
 #include <hyperion/ImageProcessorFactory.h>
 #include <hyperion/ImageProcessor.h>