diff --git a/src/nix/eval.cc b/src/nix/eval.cc
index 5dedf02c2..23fef7c68 100644
--- a/src/nix/eval.cc
+++ b/src/nix/eval.cc
@@ -111,7 +111,7 @@ struct CmdEval : MixJSON, InstallableCommand
 
         else if (raw) {
             stopProgressBar();
-            std::cout << *state->coerceToString(noPos, *v, context, "While generating the eval command output");
+            std::cout << *state->coerceToString(noPos, *v, context, "while generating the eval command output");
         }
 
         else if (json) {