diff --git a/src/ITAMagnitudeSpectrum.cpp b/src/ITAMagnitudeSpectrum.cpp
index ce807c823b076b56f7eed3be1605957cfa1bd0e7..d7301c68186c520556616c71f069cff476f65951 100644
--- a/src/ITAMagnitudeSpectrum.cpp
+++ b/src/ITAMagnitudeSpectrum.cpp
@@ -2,6 +2,7 @@
 #include <ITAConstants.h>
 
 #include <numeric>
+#include <limits>
 
 CITAMagnitudeSpectrum::CITAMagnitudeSpectrum( const int nNumBands )
 	: CITASpectrum( nNumBands )
diff --git a/src/ITASpectrum.cpp b/src/ITASpectrum.cpp
index 1f5dd1a0e58e9d060fa8cf7653aad113160cef0e..a272c3f320e2f9e8554bafba1b0f8851bf94df0f 100644
--- a/src/ITASpectrum.cpp
+++ b/src/ITASpectrum.cpp
@@ -1,5 +1,6 @@
 #include <ITASpectrum.h>
 #include <ITAException.h>
+#include <cmath>
 
 CITASpectrum::CITASpectrum( const int nNumBands )
 {
@@ -151,4 +152,4 @@ std::ostream& operator<<( std::ostream& os, const CITASpectrum& oSpectrum )
 	}
 
 	return os;
-}
\ No newline at end of file
+}