diff --git a/tile-join.cpp b/tile-join.cpp
index 6d46ab3b..5c9300dc 100644
--- a/tile-join.cpp
+++ b/tile-join.cpp
@@ -64,12 +64,12 @@ bool progress_time() {
 }
 
 struct stats {
-	int minzoom;
-	int maxzoom;
-	double midlat, midlon;
-	double minlat, minlon, maxlat, maxlon;
-	double minlat2, minlon2, maxlat2, maxlon2;
-	std::vector<struct strategy> strategies;
+	int minzoom = 0;
+	int maxzoom = 0;
+	double midlat = 0, midlon = 0;
+	double minlat = 0, minlon = 0, maxlat = 0, maxlon = 0;
+	double minlat2 = 0, minlon2 = 0, maxlat2 = 0, maxlon2 = 0;
+	std::vector<struct strategy> strategies{};
 };
 
 void append_tile(std::string message, int z, unsigned x, unsigned y, std::map<std::string, layermap_entry> &layermap, std::vector<std::string> &header, std::map<std::string, std::vector<std::string>> &mapping, std::set<std::string> &exclude, std::set<std::string> &include, std::set<std::string> &keep_layers, std::set<std::string> &remove_layers, int ifmatched, mvt_tile &outtile, json_object *filter) {
@@ -1473,7 +1473,6 @@ int main(int argc, char **argv) {
 	}
 
 	struct stats st;
-	memset(&st, 0, sizeof(st));
 	st.minzoom = st.minlat = st.minlon = st.minlat2 = st.minlon2 = INT_MAX;
 	st.maxzoom = st.maxlat = st.maxlon = st.maxlat2 = st.maxlon2 = INT_MIN;