diff --git a/src/main.c b/src/main.c
index 6b743c7..583140d 100644
--- a/src/main.c
+++ b/src/main.c
@@ -632,6 +632,12 @@ int main(void)
 	power_state.temp_avg = fxp_from_int(-999);
 
 	/* initialize mpp_state */
+	mpp_state.powerSamples = 0;
+	mpp_state.powerAccu = 0;
+	mpp_state.maxPower = 0;
+	mpp_state.refPower = 0;
+	mpp_state.nextTestStepTime = 0;
+	mpp_state.testIdx = -1;
 	mpp_state.maxPWM = CONV_PWM_MAX;
 	mpp_state.refPWM = CONV_PWM_MAX;