diff --git a/Handbook/GNUmakefile b/Handbook/GNUmakefile
index 5a75de6d..59cfde63 100644
--- a/Handbook/GNUmakefile
+++ b/Handbook/GNUmakefile
@@ -575,14 +575,14 @@ endif # ($(SG_BUILD_PLATFORM),$(SG_BUILD_PLATFORM_LINUX))
 	@echo "Uploading '$(SG_HANDBOOK_DEPLOY_GENERATED_PDF_FILE)' to '$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)/$(SG_HANDBOOK_REVISION)'..."
 	@scp \
 		-P $(SG_HANDBOOK_SSH_PORT) \
-		$(SG_HANDBOOK_DEPLOY_GENERATED_PDF_FILE) \
+		"$(SG_HANDBOOK_DEPLOY_GENERATED_PDF_FILE)" \
 		$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)/$(SG_HANDBOOK_REVISION)
 	@echo "Copying '$(SG_DOCUMENTATION_EPUB_FILE)' to '$(SG_HANDBOOK_DEPLOY_GENERATED_EPUB_FILE)'..."
 	@cp -v "$(SG_DOCUMENTATION_EPUB_FILE)" "$(SG_HANDBOOK_DEPLOY_GENERATED_EPUB_FILE)"
 	@echo "Uploading '$(SG_HANDBOOK_DEPLOY_GENERATED_EPUB_FILE)' to '$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)/$(SG_HANDBOOK_REVISION)'..."
 	@scp \
 		-P $(SG_HANDBOOK_SSH_PORT) \
-		$(SG_HANDBOOK_DEPLOY_GENERATED_EPUB_FILE) \
+		"$(SG_HANDBOOK_DEPLOY_GENERATED_EPUB_FILE)" \
 		$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)/$(SG_HANDBOOK_REVISION)
 	@echo "Retrieving the list of deployed handbook revisions from '$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_PORT)/$(SG_HANDBOOK_SSH_REMOTE_DIR)'..."
 	@ssh \
@@ -682,10 +682,10 @@ endif # ($(SG_BUILD_PLATFORM),$(SG_BUILD_PLATFORM_LINUX))
 	@echo "Uploading '$(SG_HANDBOOK_FAVICON_FILE)' to '$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)'"
 	@scp \
 		-P $(SG_HANDBOOK_SSH_PORT) \
-		$(SG_HANDBOOK_FAVICON_FILE) \
+		"$(SG_HANDBOOK_FAVICON_FILE)" \
 		$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)
 	@echo "Uploading '$(SG_HANDBOOK_DEPLOY_GENERATED_HOME_INDEX_FILE)' to '$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)'"
 	@scp \
 		-P $(SG_HANDBOOK_SSH_PORT) \
-		$(SG_HANDBOOK_DEPLOY_GENERATED_HOME_INDEX_FILE) \
+		"$(SG_HANDBOOK_DEPLOY_GENERATED_HOME_INDEX_FILE)" \
 		$(SG_HANDBOOK_SSH_USER)@$(SG_HANDBOOK_SSH_HOST):$(SG_HANDBOOK_SSH_REMOTE_DIR)
\ No newline at end of file