diff --git a/src/Makefile b/src/Makefile
index 657d6a9768..30e61baad9 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1257,7 +1257,7 @@ MACVIMGUI_SRC	= gui.c MacVim/gui_macvim.m MacVim/MMBackend.m \
 MACVIMGUI_OBJ	= objects/gui.o objects/pty.o objects/gui_macvim.o \
 		  objects/MMBackend.o objects/MacVim.o
 MACVIMGUI_DEFS	= -DFEAT_GUI_MACVIM -Wall -Wno-unknown-pragmas -pipe
-MACVIMGUI_IPATH	= -I. -Iproto
+MACVIMGUI_IPATH	=
 MACVIMGUI_LIBS_DIR =
 MACVIMGUI_LIBS1	= -framework Cocoa -framework Carbon
 MACVIMGUI_LIBS2	=