diff --git a/Makefile b/Makefile
index fdab0e2..5ed1fcf 100644
--- a/Makefile
+++ b/Makefile
@@ -17,11 +17,15 @@ HEADERS = $(XAV_DIR)/reader.h $(XAV_DIR)/decoder.h $(XAV_DIR)/utils.h
 SOURCES = $(XAV_DIR)/xav_nif.c $(XAV_DIR)/reader.c $(XAV_DIR)/decoder.c $(XAV_DIR)/utils.c
 
 ifeq ($(USE_BUNDLED_FFMPEG), true)
-CFLAGS = -fPIC -I$(ERTS_INCLUDE_DIR) -I${FFMPEG_INCLUDE_DIR} -I${XAV_DIR} -shared $(XAV_DEBUG_LOGS)
-LDFLAGS = -L$(FFMPEG_LIB_DIR) -Wl,--whole-archive -lavcodec -lswscale -lavutil -lavformat -Wl,--no-whole-archive 
+	CFLAGS = -fPIC -I$(ERTS_INCLUDE_DIR) -I${FFMPEG_INCLUDE_DIR} -I${XAV_DIR} -shared $(XAV_DEBUG_LOGS)
+	LDFLAGS = -L$(FFMPEG_LIB_DIR) -Wl,--whole-archive -lavcodec -lswscale -lavutil -lavformat -Wl,--no-whole-archive 
 else
-CFLAGS = -fPIC -I$(ERTS_INCLUDE_DIR) -I${XAV_DIR} -shared $(XAV_DEBUG_LOGS)
-LDFLAGS = -lavcodec -lswscale -lavutil -lavformat -lavdevice -lswresample
+	CFLAGS = -fPIC -I$(ERTS_INCLUDE_DIR) -I${XAV_DIR} -shared $(XAV_DEBUG_LOGS)
+	LDFLAGS = -lavcodec -lswscale -lavutil -lavformat -lavdevice -lswresample
+endif
+
+ifeq ($(shell uname -s),Darwin)
+	CFLAGS += -undefined dynamic_lookup
 endif
 
 $(XAV_SO): Makefile $(SOURCES) $(HEADERS)