diff --git a/code/nel/src/3d/meshvp_wind_tree.cpp b/code/nel/src/3d/meshvp_wind_tree.cpp
index 1b81af721..ba27216f0 100644
--- a/code/nel/src/3d/meshvp_wind_tree.cpp
+++ b/code/nel/src/3d/meshvp_wind_tree.cpp
@@ -226,7 +226,8 @@ void CMeshVPWindTree::initVertexPrograms()
 		{
 			// setup of the VPLight fragment
 			uint	numPls= i/4;
-			bool	normalize= (i&1)!=0;
+			// FIXME: normalize=true makes trees dance, workaround for issue #160
+			bool	normalize= false; //(i&1)!=0;
 			bool	specular= (i&2)!=0;
 
 			// combine