diff --git a/generic-pc/Makefile.am b/generic-pc/Makefile.am
index fdb6281..07f9eb6 100644
--- a/generic-pc/Makefile.am
+++ b/generic-pc/Makefile.am
@@ -3,7 +3,8 @@ noinst_LTLIBRARIES = libgeneric.la
 AM_CPPFLAGS = -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS
 AM_CPPFLAGS += \
 	-I$(top_srcdir)/common \
-	-I$(top_srcdir)/include
+	-I$(top_srcdir)/include \
+	@AVUTIL_CFLAGS@
 
 AM_CXXFLAGS = -fno-rtti -fno-exceptions -fno-strict-aliasing