diff --git a/src/lib/launchdetection/CatapultLaunchMethod.cpp b/src/lib/launchdetection/CatapultLaunchMethod.cpp
index b5692cc7e7..630b6ae3a0 100644
--- a/src/lib/launchdetection/CatapultLaunchMethod.cpp
+++ b/src/lib/launchdetection/CatapultLaunchMethod.cpp
@@ -49,6 +49,7 @@ CatapultLaunchMethod::CatapultLaunchMethod(SuperBlock *parent) :
 	SuperBlock(parent, "CAT"),
 	last_timestamp(hrt_absolute_time()),
 	integrator(0.0f),
+	motorDelayCounter(0.0f),
 	state(LAUNCHDETECTION_RES_NONE),
 	thresholdAccel(this, "A"),
 	thresholdTime(this, "T"),