diff --git a/Makefile b/Makefile
index c147d16..985c6ff 100644
--- a/Makefile
+++ b/Makefile
@@ -115,8 +115,8 @@ $(__Wl_clipboard):
 .PHONY : all
 all:
 	@[[ -z "$(git submodule status | grep --quiet '^-')" ]] && \
-		$(error "Git submodules have not been initialised. Please run: git "+\
-		"submodule update --init.")
+		$(error "Git submodules have not been initialised. Please run: git \
+"submodule update --init")
 	$(MAKE) build
 
 .PHONY : build