diff --git a/build/makefile_base.mak b/build/makefile_base.mak
index c08c74ce..641e629c 100644
--- a/build/makefile_base.mak
+++ b/build/makefile_base.mak
@@ -373,7 +373,8 @@ deploy: dist | $(filter-out dist deploy install redist,$(MAKECMDGOALS))
 install: dist | $(filter-out dist deploy install redist,$(MAKECMDGOALS))
 	if [ ! -d $(STEAM_DIR) ]; then echo >&2 "!! "$(STEAM_DIR)" does not exist, cannot install"; return 1; fi
 	mkdir -p $(STEAM_DIR)/compatibilitytools.d/$(BUILD_NAME)
-	cp -af --no-dereference --preserve=mode,links $(DST_BASE)/* $(STEAM_DIR)/compatibilitytools.d/$(BUILD_NAME)
+	# Use -r instead of -a for sshfs
+	cp -rf --no-dereference --preserve=mode,links $(DST_BASE)/* $(STEAM_DIR)/compatibilitytools.d/$(BUILD_NAME)
 	@echo "Installed Proton to "$(STEAM_DIR)/compatibilitytools.d/$(BUILD_NAME)
 	@echo "You may need to restart Steam to select this tool"