diff --git a/common.mak b/common.mak
index 58ff839bdc..88a816efed 100644
--- a/common.mak
+++ b/common.mak
@@ -12,8 +12,7 @@ vpath %.S $(SRC_DIR)
 ALLFFLIBS = avcodec avdevice avfilter avformat avutil postproc swscale
 
 CFLAGS = -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE \
-         -D_ISOC9X_SOURCE -I$(BUILD_ROOT) -I$(SRC_PATH) \
-         $(addprefix -I$(SRC_PATH)/lib,$(ALLFFLIBS)) $(OPTFLAGS)
+         -D_ISOC9X_SOURCE -I$(BUILD_ROOT) -I$(SRC_PATH) $(OPTFLAGS)
 
 %.o: %.c
 	$(CC) $(CFLAGS) $(LIBOBJFLAGS) -c -o $@ $<