diff --git a/example/Numerics/PSE/1_Derivative_approx_1D_mp/Makefile b/example/Numerics/PSE/1_Derivative_approx_1D_mp/Makefile
index 7e8b3666f05d4a06f12584cc7ffab5a7bc2a6740..a818248abc7a450223ffb9bb44b48de071159be3 100644
--- a/example/Numerics/PSE/1_Derivative_approx_1D_mp/Makefile
+++ b/example/Numerics/PSE/1_Derivative_approx_1D_mp/Makefile
@@ -17,8 +17,8 @@ OBJ_128 = main_float128.o
 
 #all: pse_1d_128
 
-#run: all
-#	source $$HOME/openfpm_vars; ./pse_1d_128
+run: #all
+	source $$HOME/openfpm_vars;# ./pse_1d_128
 
 #.PHONY: clean all run