diff --git a/QtScrcpy/adb/adbprocess.cpp b/QtScrcpy/adb/adbprocess.cpp
index 43a09a9..7eb4e2c 100644
--- a/QtScrcpy/adb/adbprocess.cpp
+++ b/QtScrcpy/adb/adbprocess.cpp
@@ -1,6 +1,8 @@
 #include <QProcess>
 #include <QCoreApplication>
 #include <QDebug>
+#include <QFileInfo>
+#include <QDir>
 
 #include "adbprocess.h"
 
@@ -23,7 +25,8 @@ const QString& AdbProcess::getAdbPath()
 {
     if (s_adbPath.isEmpty()) {
         s_adbPath = QString::fromLocal8Bit(qgetenv("QTSCRCPY_ADB_PATH"));
-        if (s_adbPath.isEmpty()) {
+        QFileInfo fileInfo(s_adbPath);
+        if (s_adbPath.isEmpty() || !fileInfo.isFile()) {
             s_adbPath = QCoreApplication::applicationDirPath() + "/adb";
         }
     }
diff --git a/QtScrcpy/server/server.cpp b/QtScrcpy/server/server.cpp
index 58fe266..b4450ee 100644
--- a/QtScrcpy/server/server.cpp
+++ b/QtScrcpy/server/server.cpp
@@ -4,6 +4,7 @@
 #include <QSize>
 #include <QTimerEvent>
 #include <QCoreApplication>
+#include <QFileInfo>
 
 #include "server.h"
 
@@ -52,7 +53,8 @@ const QString& Server::getServerPath()
 {
     if (m_serverPath.isEmpty()) {
         m_serverPath = QString::fromLocal8Bit(qgetenv("QTSCRCPY_SERVER_PATH"));
-        if (m_serverPath.isEmpty()) {
+        QFileInfo fileInfo(m_serverPath);
+        if (m_serverPath.isEmpty() || !fileInfo.isFile()) {
             m_serverPath = QCoreApplication::applicationDirPath() + "/scrcpy-server.jar";
         }
     }