diff --git a/bin/platformio-custom.py b/bin/platformio-custom.py
index e54d1586f..4a1887d9d 100644
--- a/bin/platformio-custom.py
+++ b/bin/platformio-custom.py
@@ -86,7 +86,7 @@ if platform.name == "espressif32":
 
 if platform.name == "nordicnrf52":
     env.AddPostAction("$BUILD_DIR/${PROGNAME}.hex",
-                      env.VerboseAction(f"\"{sys.executable}\" ./bin/uf2conv.py $BUILD_DIR/firmware.hex -c -f 0xADA52840 -o $BUILD_DIR/firmware.uf2",
+                      env.VerboseAction(f"\"{sys.executable}\" ./bin/uf2conv.py \"$BUILD_DIR/firmware.hex\" -c -f 0xADA52840 -o \"$BUILD_DIR/firmware.uf2\"",
                                         "Generating UF2 file"))
 
 Import("projenv")