diff --git a/Cantera/python/examples/reactors/mix1_sim/Makefile.in b/Cantera/python/examples/reactors/mix1_sim/Makefile.in
index 384ded79e..7c529b596 100644
--- a/Cantera/python/examples/reactors/mix1_sim/Makefile.in
+++ b/Cantera/python/examples/reactors/mix1_sim/Makefile.in
@@ -4,6 +4,8 @@ INST_DIR=@ct_demodir@/python/reactors/mix1_sim
 
 PYTHON_CMD = @PYTHON_CMD@
 
+all:
+
 run:
 	$(PYTHON_CMD) mix1.py
 
diff --git a/Cantera/python/examples/reactors/mix2_sim/Makefile.in b/Cantera/python/examples/reactors/mix2_sim/Makefile.in
index 2c67f0627..98f75afbf 100644
--- a/Cantera/python/examples/reactors/mix2_sim/Makefile.in
+++ b/Cantera/python/examples/reactors/mix2_sim/Makefile.in
@@ -4,6 +4,8 @@ INST_DIR=@ct_demodir@/python/reactors/mix2_sim
 
 PYTHON_CMD = @PYTHON_CMD@
 
+all:
+
 run:
 	$(PYTHON_CMD) mix2.py
 
diff --git a/Cantera/python/examples/reactors/piston_sim/Makefile.in b/Cantera/python/examples/reactors/piston_sim/Makefile.in
index 80faaf74d..50e1ed1da 100644
--- a/Cantera/python/examples/reactors/piston_sim/Makefile.in
+++ b/Cantera/python/examples/reactors/piston_sim/Makefile.in
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-INST_DIR=@ct_demodir@/python/piston_sim
+INST_DIR=@ct_demodir@/python/reactors/piston_sim
 
 PYTHON_CMD = @PYTHON_CMD@
 
diff --git a/Cantera/python/examples/reactors/reactor1_sim/Makefile.in b/Cantera/python/examples/reactors/reactor1_sim/Makefile.in
index bc2939c77..b5bfd179d 100644
--- a/Cantera/python/examples/reactors/reactor1_sim/Makefile.in
+++ b/Cantera/python/examples/reactors/reactor1_sim/Makefile.in
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-INST_DIR=@ct_demodir@/python/reactors/reactors1_sim
+INST_DIR=@ct_demodir@/python/reactors/reactor1_sim
 
 PYTHON_CMD = @PYTHON_CMD@