diff --git a/nix-repl.cc b/nix-repl.cc
index 8569b5eb6..e753c637a 100644
--- a/nix-repl.cc
+++ b/nix-repl.cc
@@ -316,7 +316,7 @@ bool NixRepl::processLine(string line)
         evalString(arg, v);
         DrvInfo drvInfo(state);
         if (!getDerivation(state, v, drvInfo, false))
-            throw Error("expression does not evaluation to a derivation, so I can't build it");
+            throw Error("expression does not evaluate to a derivation, so I can't build it");
         Path drvPath = drvInfo.queryDrvPath();
         if (drvPath == "" || !store->isValidPath(drvPath))
             throw Error("expression did not evaluate to a valid derivation");