diff --git a/make/defs.mk b/make/defs.mk
index a3128472..eea3ad48 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -73,6 +73,11 @@ else
 endif
 endif
 
+ifeq ($(CATCH_ONLY_YERROR),true)
+CFLAGS                += -DCATCH_ONLY_YERROR
+CPPFLAGS              += -DCATCH_ONLY_YERROR
+endif
+
 ifneq ($(shell echo $(OS) | cut -d: -f1),suse-9)
 SYSCONFIG_PREFIX      ?= /etc
 SYSCONFIG_FILE        ?= /etc/rc.config