diff --git a/include/libcamera/geometry.h b/include/libcamera/geometry.h
index 2d364891..edda42cf 100644
--- a/include/libcamera/geometry.h
+++ b/include/libcamera/geometry.h
@@ -71,6 +71,7 @@ class SizeRange
 {
 public:
 	SizeRange()
+		: hStep(0), vStep(0)
 	{
 	}