diff --git a/fsl_glm.cc b/fsl_glm.cc
index c485b073fc93558387c2890a9993d9a8da0fadf7..41091065f07c1004ca4f45646baab37bd91523cb 100644
--- a/fsl_glm.cc
+++ b/fsl_glm.cc
@@ -271,7 +271,6 @@ int setup(int &dof){
 		}
 	}else{
 		contrasts = IdentityMatrix(design.Ncols());
-		contrasts &= -1.0 * contrasts;
 	}
 	return 0;	
 }