diff --git a/src/historytimecategorymodel.cpp b/src/historytimecategorymodel.cpp
index c19a183676daef92c199bd744f7c58a4d37d1365..a5284d957f90f92abceaed82d0058bac06eea7a7 100644
--- a/src/historytimecategorymodel.cpp
+++ b/src/historytimecategorymodel.cpp
@@ -138,8 +138,8 @@ HistoryTimeCategoryModel::HistoryConst HistoryTimeCategoryModel::timeToHistoryCo
    *  tm_year   int   years since 1900
    *  tm_wday   int   days since Sunday     0-6
    */
-   struct tm localCurrentTime = {};
-   struct tm localPastTime = {};
+   struct tm localCurrentTime;
+   struct tm localPastTime;
 
    ::localtime_r(&currentTime, &localCurrentTime);
    ::localtime_r(&time, &localPastTime);