diff --git a/sim/cris/Makefile.in b/sim/cris/Makefile.in
index 6125fc87bed..18dd2f451b5 100644
--- a/sim/cris/Makefile.in
+++ b/sim/cris/Makefile.in
@@ -41,8 +41,8 @@ SIM_EXTRA_DEPS = \
 
 SIM_EXTRA_CLEAN = cris-clean
 
-# Code doesn't build cleanly yet.
-SIM_WERROR_CFLAGS =
+# Some modules don't build cleanly yet.
+crisv10f.o crisv32f.o: SIM_WERROR_CFLAGS =
 
 ## COMMON_POST_CONFIG_FRAG