diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 50453ae07..e0f9462a0 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -8021,10 +8021,9 @@ Sigma_Exit:
 	
     */
     case 862: // M862: print checking
-          float nDummy;
-          uint8_t nCommand;
-          nCommand=(uint8_t)(modff(code_value(),&nDummy)*10.0+0.5);
-          switch((ClPrintChecking)nCommand)
+    {
+        ClPrintChecking nCommand = static_cast<ClPrintChecking>(strtol(strchr_pointer+5, NULL, 10));
+        switch(nCommand)
                {
                case ClPrintChecking::_Nozzle:     // ~ .1
                     uint16_t nDiameter;
@@ -8074,7 +8073,8 @@ Sigma_Exit:
                          SERIAL_PROTOCOLLN(GCODE_LEVEL);
                     break;
                }
-    break;
+        break;
+    }
 
 #ifdef LIN_ADVANCE
     /*!