diff --git a/src/libraries/AMPTOOLS_AMPS/Vec_ps_refl.cc b/src/libraries/AMPTOOLS_AMPS/Vec_ps_refl.cc
index d6aa7225a..8654ce025 100644
--- a/src/libraries/AMPTOOLS_AMPS/Vec_ps_refl.cc
+++ b/src/libraries/AMPTOOLS_AMPS/Vec_ps_refl.cc
@@ -127,8 +127,6 @@
 #include "AMPTOOLS_AMPS/barrierFactor.h"
 #include "IUAmpTools/report.h"
 
-#include "UTILITIES/BeamProperties.h"
-
 	//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	//....oooOO0OOooo........ Helper Functions ........oooOO0OOooo.....
 	//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~	
diff --git a/src/libraries/AMPTOOLS_AMPS/Zlm.h b/src/libraries/AMPTOOLS_AMPS/Zlm.h
index 20c1aa8e9..8224f4c74 100644
--- a/src/libraries/AMPTOOLS_AMPS/Zlm.h
+++ b/src/libraries/AMPTOOLS_AMPS/Zlm.h
@@ -51,8 +51,11 @@ class Zlm : public UserAmplitude< Zlm >
       // the framework to purge the four-vectors
       bool needsUserVarsOnly() const { return true; }
 
-      // the user variables above are the same for all instances of this amplitude
-      bool areUserVarsStatic() const { return true; }
+      // are the user variables above the same for all instances of this amplitude?
+      // this is true if the polarization is embedded in the data file, but it
+      // is not true if, for example, pGamma is computed from polarization angle
+      // and fraction that are passed as arguments to the amplitude
+      bool areUserVarsStatic() const { return m_polInTree; }
 
 #ifdef GPU_ACCELERATION