diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 50342290f..46a7ef20d 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -199,7 +199,7 @@ unsigned long pause_time = 0;
 unsigned long start_pause_print = _millis();
 unsigned long t_fan_rising_edge = _millis();
 LongTimer safetyTimer;
-static ShortTimer crashDetTimer;
+static LongTimer crashDetTimer;
 
 //unsigned long load_filament_time;
 
diff --git a/Firmware/cmdqueue.cpp b/Firmware/cmdqueue.cpp
index c100e4c70..bc39c95e8 100755
--- a/Firmware/cmdqueue.cpp
+++ b/Firmware/cmdqueue.cpp
@@ -24,7 +24,7 @@ int serial_count = 0;  //index of character read from serial line
 bool comment_mode = false;
 char *strchr_pointer; // just a pointer to find chars in the command string like X, Y, Z, E, etc
 
-ShortTimer farm_incomplete_command_timeout_timer;
+LongTimer farm_incomplete_command_timeout_timer;
 
 long gcode_N = 0;
 long gcode_LastN = 0;
diff --git a/Firmware/mmu.cpp b/Firmware/mmu.cpp
index 2f722152b..c1ee57ac0 100755
--- a/Firmware/mmu.cpp
+++ b/Firmware/mmu.cpp
@@ -75,9 +75,9 @@ int16_t mmu_version = -1;
 
 int16_t mmu_buildnr = -1;
 
-ShortTimer mmu_last_request;
-ShortTimer mmu_last_response;
-ShortTimer mmu_last_finda_response;
+LongTimer mmu_last_request;
+LongTimer mmu_last_response;
+LongTimer mmu_last_finda_response;
 
 MmuCmd mmu_last_cmd = MmuCmd::None;
 uint16_t mmu_power_failures = 0;
diff --git a/Firmware/mmu.h b/Firmware/mmu.h
index eee6cf390..12dad9d41 100644
--- a/Firmware/mmu.h
+++ b/Firmware/mmu.h
@@ -15,7 +15,7 @@ extern uint8_t mmu_extruder;
 extern uint8_t tmp_extruder;
 
 extern int8_t mmu_finda;
-extern ShortTimer mmu_last_finda_response;
+extern LongTimer mmu_last_finda_response;
 extern bool ir_sensor_detected;
 
 extern int16_t mmu_version;