diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index d191a04..c66827a 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -90,10 +90,11 @@ else
 if BUILD_AMD64
 libImlib2_la_LIBADD       = $(AMD64_OBJS) @my_libs@
 libImlib2_la_DEPENDENCIES = $(top_builddir)/config.h $(AMD64_OBJS)
-EXTRA_libImlib2_la_SOURCES = $(AMD64_SOURCES)
+EXTRA_libImlib2_la_SOURCES = $(AMD64_SRCS)
 else
 libImlib2_la_LIBADD       = @my_libs@
 libImlib2_la_DEPENDENCIES = $(top_builddir)/config.h
 endif
 endif
 libImlib2_la_LDFLAGS      = -version-info 3:0:2
+