diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index 426f23905..519855ea3 100644
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -543,6 +543,8 @@ static void main_nix_build(int argc, char * * argv)
 
         restoreProcessContext();
 
+        logger->stop();
+
         execvp(shell->c_str(), argPtrs.data());
 
         throw SysError("executing shell '%s'", *shell);
@@ -601,6 +603,8 @@ static void main_nix_build(int argc, char * * argv)
             outPaths.push_back(outputPath);
         }
 
+        logger->stop();
+
         for (auto & path : outPaths)
             std::cout << store->printStorePath(path) << '\n';
     }