diff --git a/src/anemoi/datasets/create/functions/sources/constants.py b/src/anemoi/datasets/create/functions/sources/constants.py
index 5f8c00c9..97490d20 100644
--- a/src/anemoi/datasets/create/functions/sources/constants.py
+++ b/src/anemoi/datasets/create/functions/sources/constants.py
@@ -18,7 +18,7 @@ def constants(context, dates, template, param):
         stacklevel=2,
     )
     context.trace("✅", f"from_source(constants, {template}, {param}")
-    return from_source("constants", source_or_dataset=template, date=dates, param=param)
+    return from_source("forcings", source_or_dataset=template, date=dates, param=param)
 
 
 execute = constants
diff --git a/src/anemoi/datasets/create/functions/sources/forcings.py b/src/anemoi/datasets/create/functions/sources/forcings.py
index 7e578809..ac95db57 100644
--- a/src/anemoi/datasets/create/functions/sources/forcings.py
+++ b/src/anemoi/datasets/create/functions/sources/forcings.py
@@ -11,7 +11,7 @@
 
 def forcings(context, dates, template, param):
     context.trace("✅", f"from_source(forcings, {template}, {param}")
-    return from_source("constants", source_or_dataset=template, date=dates, param=param)
+    return from_source("forcings", source_or_dataset=template, date=dates, param=param)
 
 
 execute = forcings