diff --git a/media-libs/faad2/patches/faad2-2.7.patch b/media-libs/faad2/patches/faad2-2.7.patch
index e5f4b63ce..e5a716041 100644
--- a/media-libs/faad2/patches/faad2-2.7.patch
+++ b/media-libs/faad2/patches/faad2-2.7.patch
@@ -6,8 +6,9 @@ diff -urN faad2-2.7.orig/configure.in faad2-2.7/configure.in
  AC_PROG_MAKE_SET
  AC_CHECK_PROGS(RPMBUILD, rpmbuild, rpm)
 +AC_CHECK_LIBM
- 
- AM_CONFIG_HEADER(config.h)
+
+-AM_CONFIG_HEADER(config.h)
++AC_CONFIG_HEADER(config.h)
  
 @@ -91,7 +92,7 @@
    ac_cv_c99_lrintf,
@@ -18,3 +19,4 @@ diff -urN faad2-2.7.orig/configure.in faad2-2.7/configure.in
  AC_TRY_LINK([
  #define         _ISOC9X_SOURCE  1
  #define         _ISOC99_SOURCE  1
+