1 files changed, 8 insertions, 5 deletions

diff --git a/tmk_core/avr.mk b/tmk_core/avr.mk
index f5c125771..9118e497d 100644
--- a/tmk_core/avr.mk
+++ b/tmk_core/avr.mk
@@ -156,17 +156,20 @@ dfu-split-right: $(BUILD_DIR)/$(TARGET).hex cpfirmware check-size
 define EXEC_AVRDUDE
         USB= ;\
         if $(GREP) -q -s Microsoft /proc/version; then \
-                echo 'ERROR: AVR flashing cannot be automated within the Windows Subsystem for Linux (WSL) currently. Instead, take the .hex file generated and flash it using AVRDUDE, AVRDUDESS, or XLoader.'; \
+                echo 'ERROR: AVR flashing cannot be automated within the Windows Subsystem for Linux (WSL) currently. Instead, take the .hex file generated and flash it using QMK Toolbox, AVRDUDE, AVRDUDESS, or XLoader.'; \
         else \
                 printf "Detecting USB port, reset your controller now."; \
-                ls /dev/tty* > /tmp/1; \
+                TMP1=`mktemp`; \
+                TMP2=`mktemp`; \
+                ls /dev/tty* > $$TMP1; \
                 while [ -z $$USB ]; do \
                         sleep 0.5; \
                         printf "."; \
-                        ls /dev/tty* > /tmp/2; \
-                        USB=`comm -13 /tmp/1 /tmp/2 | $(GREP) -o '/dev/tty.*'`; \
-                        mv /tmp/2 /tmp/1; \
+                        ls /dev/tty* > $$TMP2; \
+                        USB=`comm -13 $$TMP1 $$TMP2 | $(GREP) -o '/dev/tty.*'`; \
+                        mv $$TMP2 $$TMP1; \
                 done; \
+                rm $$TMP2 $$TMP1; \
                 echo ""; \
                 echo "Device $$USB has appeared; assuming it is the controller."; \
                 if $(GREP) -q -s 'MINGW\|MSYS' /proc/version; then \