diff --git a/tools/Makefile b/tools/Makefile
index d81f5f9a..28ff49bf 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -4,7 +4,7 @@ ifeq ($(UNAME),Darwin)
 endif
 
 CC := gcc
-CFLAGS := -Llib -I../include -I . -Wall -Wextra -Wno-unused-parameter $(OSX_BUILD) -pedantic -std=c99 -O3 -s
+CFLAGS := -Llib -Iinclude -I../include -I . -Wall -Wextra -Wno-unused-parameter $(OSX_BUILD) -pedantic -std=c99 -O3 -s
 PROGRAMS := n64graphics n64graphics_ci mio0 n64cksum textconv patch_libultra_math iplfontutil aifc_decode aiff_extract_codebook vadpcm_enc tabledesign extract_data_for_mio skyconv
 
 n64graphics_SOURCES := n64graphics.c utils.c