diff --git a/src/comm/APMArduCopterMockLink.params b/src/comm/APMArduCopterMockLink.params
index b9e96fea994a3ef37f13174985e33d42bfafcb3b..ec18defe9243a4f7b3c341dc30f6a33ca3bb823e 100644
--- a/src/comm/APMArduCopterMockLink.params
+++ b/src/comm/APMArduCopterMockLink.params
@@ -187,9 +187,9 @@
 1	1	GPS_SBP_LOGMASK	-256	4
 1	1	GPS_TYPE	1	2
 1	1	GPS_TYPE2	0	2
-1	1	INS_ACC2OFFS_X	0	9
-1	1	INS_ACC2OFFS_Y	0	9
-1	1	INS_ACC2OFFS_Z	0	9
+1	1	INS_ACC2OFFS_X	10	9
+1	1	INS_ACC2OFFS_Y	10	9
+1	1	INS_ACC2OFFS_Z	10	9
 1	1	INS_ACC2SCAL_X	1	9
 1	1	INS_ACC2SCAL_Y	1	9
 1	1	INS_ACC2SCAL_Z	1	9
diff --git a/src/comm/APMArduPlaneMockLink.params b/src/comm/APMArduPlaneMockLink.params
index e48a760eb7f11b74425c98ff6fc21cbd514a00dd..4eb713d18851df6c6b791d8175f8d5ee9c4353b3 100644
--- a/src/comm/APMArduPlaneMockLink.params
+++ b/src/comm/APMArduPlaneMockLink.params
@@ -231,9 +231,9 @@
 1	1	HIL_MODE	0	2
 1	1	HIL_SERVOS	0	2
 1	1	INITIAL_MODE	0	2
-1	1	INS_ACC2OFFS_X	0	9
-1	1	INS_ACC2OFFS_Y	0	9
-1	1	INS_ACC2OFFS_Z	0	9
+1	1	INS_ACC2OFFS_X	10	9
+1	1	INS_ACC2OFFS_Y	10	9
+1	1	INS_ACC2OFFS_Z	10	9
 1	1	INS_ACC2SCAL_X	1	9
 1	1	INS_ACC2SCAL_Y	1	9
 1	1	INS_ACC2SCAL_Z	1	9