diff --git a/src/FDM/YASim/Vector.hpp b/src/FDM/YASim/Vector.hpp
index e1a493c80..f290f0ae0 100644
--- a/src/FDM/YASim/Vector.hpp
+++ b/src/FDM/YASim/Vector.hpp
@@ -21,9 +21,9 @@ public:
 private:
     void realloc();
 
-    int _nelem;
-    int _sz;
-    void** _array;
+    int _nelem {0};
+    int _sz {0};
+    void** _array {nullptr};
 };
 
 inline Vector::Vector()