diff --git a/avr/platform.txt b/avr/platform.txt
index e66f7259..1cb79bd3 100644
--- a/avr/platform.txt
+++ b/avr/platform.txt
@@ -184,11 +184,11 @@ tools.micronucleus.cmd.path={runtime.tools.micronucleus.path}/micronucleus
 
 tools.micronucleus.upload.params.verbose=
 tools.micronucleus.upload.params.quiet=
-tools.micronucleus.upload.pattern="{cmd.path}" --run --dump-progress --timeout 60 {build.path}/{build.project_name}.hex
+tools.micronucleus.upload.pattern="{cmd.path}" --run --dump-progress --timeout 60 "{build.path}/{build.project_name}.hex"
 
 tools.micronucleus.bootloader.params.verbose=
 tools.micronucleus.bootloader.params.quiet=
-tools.micronucleus.bootloader.pattern="{cmd.path}" --run --dump-progress --timeout 60 {build.path}/{build.project_name}.hex
+tools.micronucleus.bootloader.pattern="{cmd.path}" --run --dump-progress --timeout 60 "{build.path}/{build.project_name}.hex"
 
 tools.micronucleus.erase.params.verbose=
 tools.micronucleus.erase.params.quiet=