diff --git a/src/thermophysicalModels/reactionThermo/mixtures/basicMultiComponentMixture/basicMultiComponentMixture.H b/src/thermophysicalModels/reactionThermo/mixtures/basicMultiComponentMixture/basicMultiComponentMixture.H
index 4a83754c0f..f590e16d69 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/basicMultiComponentMixture/basicMultiComponentMixture.H
+++ b/src/thermophysicalModels/reactionThermo/mixtures/basicMultiComponentMixture/basicMultiComponentMixture.H
@@ -26,7 +26,8 @@ Class
     Foam::basicMultiComponentMixture
 
 Description
-    combustion mixture
+    Multi-component mixture. Provides a list of mass fraction fields and helper
+    functions to query mixture composition.
 
 SourceFiles
     basicMultiComponentMixture.C