diff --git a/client/proxgui.cpp b/client/proxgui.cpp
index 9953c07ae..bc382d1c2 100644
--- a/client/proxgui.cpp
+++ b/client/proxgui.cpp
@@ -15,14 +15,14 @@
 static ProxGuiQT *gui = NULL;
 static WorkerThread *main_loop_thread = NULL;
 
-WorkerThread::WorkerThread(char *script_cmds_file, char *script_cmd, bool usb_present) : script_cmds_file(script_cmds_file), script_cmd(script_cmd), usb_present(usb_present) {
+WorkerThread::WorkerThread(char *script_cmds_file, char *script_cmd, bool pm3_present) : script_cmds_file(script_cmds_file), script_cmd(script_cmd), pm3_present(pm3_present) {
 }
 
 WorkerThread::~WorkerThread() {
 }
 
 void WorkerThread::run() {
-    main_loop(script_cmds_file, script_cmd, usb_present);
+    main_loop(script_cmds_file, script_cmd, pm3_present);
 }
 
 extern "C" void ShowGraphWindow(void) {
@@ -53,12 +53,12 @@ extern "C" void MainGraphics(void) {
     gui->MainLoop();
 }
 
-extern "C" void InitGraphics(int argc, char **argv, char *script_cmds_file, char *script_cmd, bool usb_present) {
+extern "C" void InitGraphics(int argc, char **argv, char *script_cmds_file, char *script_cmd, bool pm3_present) {
 #ifdef Q_WS_X11
     if (getenv("DISPLAY") == NULL)
         return;
 #endif
-    main_loop_thread = new WorkerThread(script_cmds_file, script_cmd, usb_present);
+    main_loop_thread = new WorkerThread(script_cmds_file, script_cmd, pm3_present);
     gui = new ProxGuiQT(argc, argv, main_loop_thread);
 }
 
diff --git a/client/proxgui.h b/client/proxgui.h
index 2c573f023..40fb1ce2d 100644
--- a/client/proxgui.h
+++ b/client/proxgui.h
@@ -22,7 +22,7 @@ void ShowGraphWindow(void);
 void HideGraphWindow(void);
 void RepaintGraphWindow(void);
 void MainGraphics(void);
-void InitGraphics(int argc, char **argv, char *script_cmds_file, char *script_cmd, bool usb_present);
+void InitGraphics(int argc, char **argv, char *script_cmds_file, char *script_cmd, bool pm3_present);
 void ExitGraphics(void);
 #ifndef MAX_GRAPH_TRACE_LEN
 #define MAX_GRAPH_TRACE_LEN (40000 * 8)
diff --git a/client/proxguiqt.h b/client/proxguiqt.h
index 6d92c22e7..2685aecde 100644
--- a/client/proxguiqt.h
+++ b/client/proxguiqt.h
@@ -99,7 +99,7 @@ class WorkerThread : public QThread {
   private:
     char *script_cmds_file = NULL;
     char *script_cmd = NULL;
-    bool usb_present;
+    bool pm3_present;
 };
 
 class ProxGuiQT : public QObject {
diff --git a/client/proxmark3.c b/client/proxmark3.c
index a16a6a7a8..0ada54e78 100644
--- a/client/proxmark3.c
+++ b/client/proxmark3.c
@@ -58,7 +58,7 @@ void
 __attribute__((force_align_arg_pointer))
 #endif
 #endif
-main_loop(char *script_cmds_file, char *script_cmd, bool usb_present) {
+main_loop(char *script_cmds_file, char *script_cmd, bool pm3_present) {
 
     char *cmd = NULL;
     bool execCommand = (script_cmd != NULL);
@@ -68,7 +68,7 @@ main_loop(char *script_cmds_file, char *script_cmd, bool usb_present) {
 
     PrintAndLogEx(DEBUG, "ISATTY/STDIN_FILENO == %s\n", (stdinOnPipe) ? "true" : "false");
 
-    if (usb_present) {
+    if (pm3_present) {
         SetOffline(false);
         // cache Version information now:
         if (execCommand || script_cmds_file || stdinOnPipe)
@@ -98,10 +98,10 @@ main_loop(char *script_cmds_file, char *script_cmd, bool usb_present) {
         if ( IsOffline() ) {
 
             // sets the global variable, SP and offline)
-            usb_present = hookUpPM3();
+            pm3_present = hookUpPM3();
 
             // usb and the reader_thread is NULL,  create a new reader thread.
-            if (usb_present && !IsOffline() ) {
+            if (pm3_present && !IsOffline() ) {
                 rarg.run = 1;
                 pthread_create(&reader_thread, NULL, &uart_receiver, &rarg);
                 // cache Version information now:
@@ -275,7 +275,7 @@ static void show_help(bool showFullHelp, char *exec_name) {
 int main(int argc, char *argv[]) {
     srand(time(0));
 
-    bool usb_present = false;
+    bool pm3_present = false;
     bool waitCOMPort = false;
     bool addLuaExec = false;
     char *script_cmds_file = NULL;
@@ -465,35 +465,35 @@ int main(int argc, char *argv[]) {
 
     // try to open USB connection to Proxmark
     if (port != NULL)
-        usb_present = OpenProxmark(port, waitCOMPort, 20, false, speed);
+        pm3_present = OpenProxmark(port, waitCOMPort, 20, false, speed);
 
-    if (usb_present && (TestProxmark() == 0))
-        usb_present = false;
-    if (!usb_present)
+    if (pm3_present && (TestProxmark() == 0))
+        pm3_present = false;
+    if (!pm3_present)
         PrintAndLogEx(INFO, "Running in " _YELLOW_("OFFLINE") "mode. Check \"%s -h\" if it's not what you want.\n", exec_name);
 
 #ifdef HAVE_GUI
 
 #  ifdef _WIN32
-    InitGraphics(argc, argv, script_cmds_file, script_cmd, usb_present);
+    InitGraphics(argc, argv, script_cmds_file, script_cmd, pm3_present);
     MainGraphics();
 #  else
     // for *nix distro's,  check enviroment variable to verify a display
     char *display = getenv("DISPLAY");
     if (display && strlen(display) > 1) {
-        InitGraphics(argc, argv, script_cmds_file, script_cmd, usb_present);
+        InitGraphics(argc, argv, script_cmds_file, script_cmd, pm3_present);
         MainGraphics();
     } else {
-        main_loop(script_cmds_file, script_cmd, usb_present);
+        main_loop(script_cmds_file, script_cmd, pm3_present);
     }
 #  endif
 
 #else
-    main_loop(script_cmds_file, script_cmd, usb_present);
+    main_loop(script_cmds_file, script_cmd, pm3_present);
 #endif
 
     // Clean up the port
-    if (usb_present) {
+    if (pm3_present) {
         CloseProxmark();
     }
 
diff --git a/client/proxmark3.h b/client/proxmark3.h
index 52fe27385..5d5a49c9a 100644
--- a/client/proxmark3.h
+++ b/client/proxmark3.h
@@ -23,7 +23,7 @@ extern "C" {
 
 const char *get_my_executable_path(void);
 const char *get_my_executable_directory(void);
-void main_loop(char *script_cmds_file, char *script_cmd, bool usb_present);
+void main_loop(char *script_cmds_file, char *script_cmd, bool pm3_present);
 
 #ifdef __cplusplus
 }