diff --git a/src/ipa/simple/data/uncalibrated.yaml b/src/ipa/simple/data/uncalibrated.yaml
index 5508e6686..8b6df9afc 100644
--- a/src/ipa/simple/data/uncalibrated.yaml
+++ b/src/ipa/simple/data/uncalibrated.yaml
@@ -8,12 +8,12 @@ algorithms:
   # Color correction matrices can be defined here. The CCM algorithm
   # has a significant performance impact, and should only be enabled
   # if tuned.
-  # - Ccm:
-  #     ccms:
-  #       - ct: 6500
-  #         ccm: [ 1, 0, 0,
-  #                0, 1, 0,
-  #                0, 0, 1]
+  - Ccm:
+      ccms:
+        - ct: 6500
+          ccm: [ 1, 0, 0,
+                 0, 1, 0,
+                 0, 0, 1]
   - Lut:
   - Agc:
 ...