diff --git a/Ignition/models/omnicopter/model.sdf b/Ignition/models/omnicopter/model.sdf
index ec88362d..8da0b91c 100644
--- a/Ignition/models/omnicopter/model.sdf
+++ b/Ignition/models/omnicopter/model.sdf
@@ -190,7 +190,7 @@
0 0 0.018 0 0 0
- 0 0 0 0 0 0
+ 0 0 -0.018 0 0 0
0.025
9.75e-06
@@ -300,7 +300,7 @@
0 0 0.018 0 0 0
- 0 0 0 0 0 0
+ 0 0 -0.018 0 0 0
0.025
9.75e-06
@@ -410,7 +410,7 @@
0 0 0.018 0 0 0
- 0 0 0 0 0 0
+ 0 0 -0.018 0 0 0
0.025
9.75e-06
@@ -520,7 +520,7 @@
0 0 0.018 0 0 0
- 0 0 0 0 0 0
+ 0 0 -0.018 0 0 0
0.025
9.75e-06
@@ -630,7 +630,7 @@
0 0 0.018 0 0 0
- 0 0 0 0 0 0
+ 0 0 -0.018 0 0 0
0.025
9.75e-06
@@ -740,7 +740,7 @@
0 0 0.018 0 0 0
- 0 0 0 0 0 0
+ 0 0 -0.018 0 0 0
0.025
9.75e-06