Fix garbled print_xyz output (MarlinFirmware#18810)

albertogg · Aug 31, 2020 · d37a58b · d37a58b
1 parent fb179f6
commit d37a58b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Marlin/src/core/serial.cpp b/Marlin/src/core/serial.cpp
@@ -68,7 +68,7 @@ void print_bin(uint16_t val) {
 extern const char SP_X_STR[], SP_Y_STR[], SP_Z_STR[];
 
 void print_xyz(const float &x, const float &y, const float &z, PGM_P const prefix/*=nullptr*/, PGM_P const suffix/*=nullptr*/) {
-  serialprintPGM(prefix);
+  if (prefix) serialprintPGM(prefix);
   SERIAL_ECHOPAIR_P(SP_X_STR, x, SP_Y_STR, y, SP_Z_STR, z);
   if (suffix) serialprintPGM(suffix); else SERIAL_EOL();
 }