diff --git a/src/libs/utils/shellcommand.cpp b/src/libs/utils/shellcommand.cpp
index 50fd3282060..1b04043e7ff 100644
--- a/src/libs/utils/shellcommand.cpp
+++ b/src/libs/utils/shellcommand.cpp
@@ -392,7 +392,7 @@ void ShellCommand::runSynchronous(QtcProcess &process,
             if (d->m_progressParser)
                 d->m_progressParser->parseProgress(text);
             if (!(d->m_flags & SuppressStdErr))
-                appendError(text);
+                emit appendError(text);
             if (d->m_progressiveOutput)
                 emit stdErrText(text);
         });
@@ -404,7 +404,7 @@ void ShellCommand::runSynchronous(QtcProcess &process,
             if (d->m_progressParser)
                 d->m_progressParser->parseProgress(text);
             if (d->m_flags & ShowStdOut)
-                append(text);
+                emit append(text);
             if (d->m_progressiveOutput) {
                 emit stdOutText(text);
                 d->m_hadOutput = true;