diff --git a/Firmware/Marlin.h b/Firmware/Marlin.h
index 35cce09f..329e8f7c 100644
--- a/Firmware/Marlin.h
+++ b/Firmware/Marlin.h
@@ -419,7 +419,6 @@ extern void fsensor_init();
 //estimated time to end of the print
 extern uint16_t print_time_remaining();
 extern uint8_t print_percent_done();
-static void print_time_remaining_init();
 
 #ifdef HOST_KEEPALIVE_FEATURE
 
diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 0017c1d5..11c1c6e3 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -535,8 +535,9 @@ static bool saved_extruder_relative_mode = false;
 //=============================Routines======================================
 //===========================================================================
 
-void get_arc_coordinates();
-bool setTargetedHotend(int code);
+static void get_arc_coordinates();
+static bool setTargetedHotend(int code);
+static void print_time_remaining_init();
 
 void serial_echopair_P(const char *s_P, float v)
     { serialprintPGM(s_P); SERIAL_ECHO(v); }