diff --git a/flight/modules/System/systemmod.c b/flight/modules/System/systemmod.c
index a09a77fa3..b6fa8d89b 100644
--- a/flight/modules/System/systemmod.c
+++ b/flight/modules/System/systemmod.c
@@ -244,7 +244,9 @@ static void systemTask(__attribute__((unused)) void *parameters)
 
 #ifdef DIAG_TASKS
     TaskInfoData taskInfoData;
+    memset(&taskInfoData, 0, sizeof(TaskInfoData));
     CallbackInfoData callbackInfoData;
+    memset(&callbackInfoData, 0, sizeof(CallbackInfoData));
 #endif
     // Main system loop
     while (1) {