diff --git a/src/plugins/qnx/qnxutils.cpp b/src/plugins/qnx/qnxutils.cpp
index 404bcb99bb1..7dc57201a69 100644
--- a/src/plugins/qnx/qnxutils.cpp
+++ b/src/plugins/qnx/qnxutils.cpp
@@ -51,11 +51,6 @@ const char *EVAL_ENV_VARS[] = {
 };
 }
 
-QString QnxUtils::addQuotes(const QString &string)
-{
-    return QLatin1Char('"') + string + QLatin1Char('"');
-}
-
 QString QnxUtils::cpuDirFromAbi(const Abi &abi)
 {
     if (abi.os() != Abi::OS::QnxOS)
diff --git a/src/plugins/qnx/qnxutils.h b/src/plugins/qnx/qnxutils.h
index 5ebf1534f29..c918ba09ab6 100644
--- a/src/plugins/qnx/qnxutils.h
+++ b/src/plugins/qnx/qnxutils.h
@@ -38,8 +38,6 @@
 namespace Qnx {
 namespace Internal {
 
-class QnxQtVersion;
-
 class ConfigInstallInformation
 {
 public:
@@ -68,7 +66,6 @@ public:
 class QnxUtils
 {
 public:
-    static QString addQuotes(const QString &string);
     static QString cpuDirFromAbi(const ProjectExplorer::Abi &abi);
     static QString cpuDirShortDescription(const QString &cpuDir);
     static Utils::EnvironmentItems qnxEnvironmentFromEnvFile(const QString &fileName);