diff --git a/debian/arch/powerpc/Makefile.inc b/debian/arch/powerpc/Makefile.inc
index 6abefea2e..b100580d7 100644
--- a/debian/arch/powerpc/Makefile.inc
+++ b/debian/arch/powerpc/Makefile.inc
@@ -1,6 +1,6 @@
 #
 # Variables 
 #
-header_dirs = 'ppc | ppc64'
+headers_dirs = 'ppc | ppc64'
 headers_subarch = powerpc
 build_subarch = powerpc