diff --git a/src/plugins/qnx/qnxqtversion.cpp b/src/plugins/qnx/qnxqtversion.cpp
index 3c704bb4214..1f134feb155 100644
--- a/src/plugins/qnx/qnxqtversion.cpp
+++ b/src/plugins/qnx/qnxqtversion.cpp
@@ -95,14 +95,10 @@ Utils::FilePath QnxQtVersion::qnxTarget() const
 
 QString QnxQtVersion::cpuDir() const
 {
-    ensureMkSpecParsed();
-    return m_cpuDir;
-}
-
-void QnxQtVersion::parseMkSpec(ProFileEvaluator *evaluator) const
-{
-    m_cpuDir = evaluator->value(QLatin1String("QNX_CPUDIR"));
-    BaseQtVersion::parseMkSpec(evaluator);
+    const Abis abis = qtAbis();
+    if (abis.empty())
+        return QString();
+    return QnxUtils::cpuDirFromAbi(abis.at(0));
 }
 
 QVariantMap QnxQtVersion::toMap() const
diff --git a/src/plugins/qnx/qnxqtversion.h b/src/plugins/qnx/qnxqtversion.h
index d41e19852ca..c12da8b5662 100644
--- a/src/plugins/qnx/qnxqtversion.h
+++ b/src/plugins/qnx/qnxqtversion.h
@@ -67,9 +67,6 @@ public:
     QString sdpPath() const;
     void setSdpPath(const QString &sdpPath);
 
-protected:
-   void parseMkSpec(ProFileEvaluator *) const override;
-
 private:
     void updateEnvironment() const;
 
diff --git a/src/plugins/qnx/qnxutils.cpp b/src/plugins/qnx/qnxutils.cpp
index f45764c4e04..404bcb99bb1 100644
--- a/src/plugins/qnx/qnxutils.cpp
+++ b/src/plugins/qnx/qnxutils.cpp
@@ -56,6 +56,17 @@ QString QnxUtils::addQuotes(const QString &string)
     return QLatin1Char('"') + string + QLatin1Char('"');
 }
 
+QString QnxUtils::cpuDirFromAbi(const Abi &abi)
+{
+    if (abi.os() != Abi::OS::QnxOS)
+        return QString();
+    if (abi.architecture() == Abi::Architecture::ArmArchitecture)
+        return QString::fromLatin1(abi.wordWidth() == 32 ? "armle-v7" : "aarch64le");
+    if (abi.architecture() == Abi::Architecture::X86Architecture)
+        return QString::fromLatin1(abi.wordWidth() == 32 ? "x86" : "x86_64");
+    return QString();
+}
+
 QString QnxUtils::cpuDirShortDescription(const QString &cpuDir)
 {
     if (cpuDir == "armle-v7")
diff --git a/src/plugins/qnx/qnxutils.h b/src/plugins/qnx/qnxutils.h
index 63ef5dd86ed..5ebf1534f29 100644
--- a/src/plugins/qnx/qnxutils.h
+++ b/src/plugins/qnx/qnxutils.h
@@ -69,6 +69,7 @@ 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);
     static QString envFilePath(const QString &sdpPath);