diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml
index 4befec7..33062d6 100644
--- a/src/libcamera/control_ids.yaml
+++ b/src/libcamera/control_ids.yaml
@@ -44,10 +44,10 @@ controls:
 
   - ManualExposure:
       type: int32_t
-      description: Specify a fixed exposure time in milli-seconds
+      description: Specify a fixed exposure time in micro-seconds
 
   - ManualGain:
-      type: int32_t
-      description: Specify a fixed gain parameter
+      type: double
+      description: Specify a fixed gain parameter.
 
 ...