diff --git a/radio/src/debug.cpp b/radio/src/debug.cpp
index c4de32e9f..f7a0bd1f5 100644
--- a/radio/src/debug.cpp
+++ b/radio/src/debug.cpp
@@ -26,10 +26,6 @@
 traceCallbackFunc traceCallback = 0;
 #endif
 
-#if !defined(SIMU)
-uint32_t debugCounter1ms = 0;
-#endif
-
 #if defined(SIMU)
 #define PRINTF_BUFFER_SIZE     1024
 void debugPrintf(const char * format, ...)
diff --git a/radio/src/debug.h b/radio/src/debug.h
index f3dcf5b3a..092c6d625 100644
--- a/radio/src/debug.h
+++ b/radio/src/debug.h
@@ -54,8 +54,8 @@ uint8_t aux2SerialTracesEnabled();
   #define debugPrintf(...)
 #endif
 
-#define TRACE_TIME_FORMAT     "%0.2f "
-#define TRACE_TIME_VALUE      ((float)g_tmr10ms / 100)
+#define TRACE_TIME_FORMAT     "%0.2fs: "
+#define TRACE_TIME_VALUE      ((float)g_tmr10ms / 100.0)
 
 #define TRACE_NOCRLF(...)     debugPrintf(__VA_ARGS__)
 #define TRACE(f_, ...)        debugPrintf((TRACE_TIME_FORMAT f_ CRLF), TRACE_TIME_VALUE, ##__VA_ARGS__)
@@ -432,9 +432,5 @@ extern const char * const debugTimerNames[DEBUG_TIMERS_COUNT];
 
 #endif //#if defined(DEBUG_TIMERS)
 
-#if !defined(SIMU)
-extern uint32_t debugCounter1ms;
-#endif
-
 #endif // _DEBUG_H_
 
diff --git a/radio/src/gui/colorlcd/view_main.cpp b/radio/src/gui/colorlcd/view_main.cpp
index b9c1721e4..86c79f8e3 100644
--- a/radio/src/gui/colorlcd/view_main.cpp
+++ b/radio/src/gui/colorlcd/view_main.cpp
@@ -96,7 +96,7 @@ void ViewMain::setCurrentMainView(unsigned view)
 {
   if (view < getMainViewsCount()) {
     setScrollPositionX(view * pageWidth);
-    TRACE("### switched to view #%i", g_model.view);
+    TRACE("### switched to view #%u", g_model.view);
   }
 }
 
diff --git a/radio/src/serial.cpp b/radio/src/serial.cpp
index ff89bb52f..c83b2fd92 100644
--- a/radio/src/serial.cpp
+++ b/radio/src/serial.cpp
@@ -45,9 +45,8 @@ void serialPrintf(const char * format, ...)
   va_list arglist;
   char tmp[PRINTF_BUFFER_SIZE+1];
 
-  snprintf(tmp, PRINTF_BUFFER_SIZE, "+%05lums: ", debugCounter1ms);
   va_start(arglist, format);
-  vsnprintf(tmp+strlen(tmp), PRINTF_BUFFER_SIZE-strlen(tmp), format, arglist);
+  vsnprintf(tmp, PRINTF_BUFFER_SIZE, format, arglist);
   tmp[PRINTF_BUFFER_SIZE] = '\0';
   va_end(arglist);
 
@@ -55,7 +54,6 @@ void serialPrintf(const char * format, ...)
   while (*t) {
     serialPutc(*t++);
   }
-  debugCounter1ms = 0;
 }
 
 void serialCrlf()
diff --git a/radio/src/targets/common/arm/stm32/bootloader/boot.cpp b/radio/src/targets/common/arm/stm32/bootloader/boot.cpp
index fd7c36a6d..0d6383752 100644
--- a/radio/src/targets/common/arm/stm32/bootloader/boot.cpp
+++ b/radio/src/targets/common/arm/stm32/bootloader/boot.cpp
@@ -57,7 +57,6 @@ volatile rotenc_t rotencValue = 0;
 
 #if defined(DEBUG)
 volatile tmr10ms_t g_tmr10ms;
-uint32_t debugCounter1ms = 0;
 #endif
 
 uint32_t firmwareSize;