diff --git a/Makefile b/Makefile
index 3fc9168..4f570d3 100644
--- a/Makefile
+++ b/Makefile
@@ -48,10 +48,10 @@ SOURCE_DIRS := source
 
 EXTRA_OUTPUT_FILES :=
 
-LIBRARY_DIRS := $(DEVKITPRO)/libctru $(DEVKITPRO)/portlibs/armv6k
+LIBRARY_DIRS := $(DEVKITPRO)/libctru $(DEVKITPRO)/portlibs/armv6k $(DEVKITPRO)/portlibs/3ds
 LIBRARIES := mpg123 vorbisidec opusfile opus ogg ctru m
 
-BUILD_FLAGS := -Wall -Wextra
+BUILD_FLAGS := -Wall -Wextra -I$(DEVKITPRO)/portlibs/armv6k/include/opus -I$(DEVKITPRO)/portlibs/3ds/include/opus 
 RUN_FLAGS :=
 
 VERSION_PARTS := $(subst ., ,$(shell git describe --tags --abbrev=0))