diff --git a/example/Plot/2_PSE_convergence/Makefile b/example/Plot/2_PSE_convergence/Makefile
index b526f48ee2afd9691d73168b79c31b44e6fe7d5a..6aa9e2fa0fe346f54844ea4939c088e17854d9a3 100644
--- a/example/Plot/2_PSE_convergence/Makefile
+++ b/example/Plot/2_PSE_convergence/Makefile
@@ -1,23 +1,26 @@
 include ../../example.mk
 
+#### this example work only if you have quadmath activated ###
+#### (only if -lquadmath work) uncomment to reactivate 
+
 CC=mpic++
 
 LDIR =
 
-OBJ = main.o
+#OBJ = main.o
 
-%.o: %.cpp
-	$(CC) -O3 -g3 -c --std=c++11  -o $@ $< $(INCLUDE_PATH)
+#%.o: %.cpp
+#	$(CC) -O3 -g3 -c --std=c++11  -o $@ $< $(INCLUDE_PATH)
 
-conv_p: $(OBJ)
-	$(CC) -o $@ $^ $(CFLAGS) $(LIBS_PATH) $(LIBS)
+#conv_p: $(OBJ)
+#	$(CC) -o $@ $^ $(CFLAGS) $(LIBS_PATH) $(LIBS) -lquadmath
 
-all: conv_p
+#all: conv_p
 
-run: all
-	source $$HOME/openfpm_vars; ./conv_p
+#run: all
+#	source $$HOME/openfpm_vars; ./conv_p
 
-.PHONY: clean all run
+#.PHONY: clean all run
 
 clean:
 	rm -f *.o *~ core conv_p
diff --git a/example/Vector/5_molecular_dynamic_sym/Makefile b/example/Vector/5_molecular_dynamic_sym/Makefile
index 734dbb092cce01eec877a21ea40fc1e15aa553ff..56f83af9175e1959fab71c45b6cf2836c7a97b23 100644
--- a/example/Vector/5_molecular_dynamic_sym/Makefile
+++ b/example/Vector/5_molecular_dynamic_sym/Makefile
@@ -17,7 +17,7 @@ md_sym: $(OBJ_DORD)
 run: md_sym
 	source $$HOME/openfpm_vars; mpirun -np 3 ./md_sym
 
-.PHONY: clean all run md_sym
+.PHONY: clean all run
 
 clean:
 	rm -f *.o *~ core md_sym