diff --git a/examples/datasets/colmap.py b/examples/datasets/colmap.py
index 2d34734e6..f1d615beb 100644
--- a/examples/datasets/colmap.py
+++ b/examples/datasets/colmap.py
@@ -86,7 +86,7 @@ def __init__(
                 params = np.empty(0, dtype=np.float32)
                 camtype = "perspective"
             if type_ == 2 or type_ == "SIMPLE_RADIAL":
-                params = np.array([cam.k1], dtype=np.float32)
+                params = np.array([cam.k1, 0.0, 0.0, 0.0], dtype=np.float32)
                 camtype = "perspective"
             elif type_ == 3 or type_ == "RADIAL":
                 params = np.array([cam.k1, cam.k2, 0.0, 0.0], dtype=np.float32)