diff --git a/gtsam/nonlinear/NonlinearOptimizationParameters.h b/gtsam/nonlinear/NonlinearOptimizationParameters.h
index 602f2f79f..158431d70 100644
--- a/gtsam/nonlinear/NonlinearOptimizationParameters.h
+++ b/gtsam/nonlinear/NonlinearOptimizationParameters.h
@@ -68,7 +68,7 @@ struct NonlinearOptimizationParameters {
 
 	NonlinearOptimizationParameters(double absDecrease, double relDecrease, double sumError,
 			int iIters = 100, double lambda = 1e-5, double lambdaFactor = 10,
-			verbosityLevel v = SILENT, LambdaMode lambdaMode = BOUNDED, bool useQR = true)
+			verbosityLevel v = SILENT, LambdaMode lambdaMode = BOUNDED, bool useQR = false)
 	:absDecrease_(absDecrease), relDecrease_(relDecrease), sumError_(sumError),
 	 maxIterations_(iIters), lambda_(lambda), lambdaFactor_(lambdaFactor), verbosity_(v),
 	 lambdaMode_(lambdaMode), useQR_(useQR) {}