--- plug-ins/tiff/Makefile.am.orig
+++ plug-ins/tiff/Makefile.am
@@ -26,9 +26,8 @@
 	$(OYRANOS_LIBS) \
 	@LCMS_LIB@                           \
 	@LIBTIFF_LIB@				\
-        $(top_builddir)/libhalf/cinepaint_half.lo       \
         $(OPENEXR_LIBS) \
-	-lc
+	-lm
 
 DEPS = $(top_builddir)/lib/libcinepaint.la