diff --git a/CHANGES.rst b/CHANGES.rst
index 03290c8a..2b766e82 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,5 +1,6 @@
 3.4.1 (unreleased)
 ==================
+- Fix bug in `cib1` when frequency goes below 18.7 GHz, emission too large https://github.com/galsci/pysm/pull/195
 - Finalized Point Source Catalog component and backgroud component https://github.com/galsci/pysm/pull/191
 - Configure verbosity easily with `set_verbosity()`
 - Updated `pixell` from 0.17.3 to 0.26.0 https://github.com/galsci/pysm/pull/183
diff --git a/src/pysm3/models/websky.py b/src/pysm3/models/websky.py
index 85c599f8..0fe0e5a1 100644
--- a/src/pysm3/models/websky.py
+++ b/src/pysm3/models/websky.py
@@ -88,7 +88,7 @@ def __init__(
         """
         self.local_folder = local_folder
         self.websky_freqs_float = [
-            1.0,
+            17.0,
             18.7,
             21.6,
             24.5,