diff --git a/repos/base/mk/generic.mk b/repos/base/mk/generic.mk
index 599e4839a5..c3529c7195 100644
--- a/repos/base/mk/generic.mk
+++ b/repos/base/mk/generic.mk
@@ -87,7 +87,7 @@ endif
 # We need to override these to build the ada runtime
 #
 CUSTOM_ADA_FLAGS   ?= --RTS=$(ADA_RTS)
-CUSTOM_ADA_OPT     ?= $(CC_ADA_OPT) -gnatef
+CUSTOM_ADA_OPT     ?= $(CC_ADA_OPT) -gnatef -gnatwG
 CUSTOM_ADA_INCLUDE ?= -I- $(INCLUDES)
 
 #