diff --git a/build/jam/ArchitectureRules b/build/jam/ArchitectureRules
index 69cee62fd6..1c94e1715b 100644
--- a/build/jam/ArchitectureRules
+++ b/build/jam/ArchitectureRules
@@ -123,7 +123,9 @@ rule ArchitectureSetup architecture
 		# TODO: Remove all these.
 		HAIKU_WERROR_FLAGS_$(architecture) += -Wno-error=unused-but-set-variable
 			-Wno-error=deprecated -Wno-error=deprecated-declarations
-			-Wno-error=cpp -Wno-error=trigraphs ;
+			-Wno-error=cpp -Wno-error=trigraphs -Wno-error=register ;
+		# These currently generate too many "false positives."
+		HAIKU_WERROR_FLAGS_$(architecture) += -Wno-error=address-of-packed-member ;
 		# But these can stay.
 		HAIKU_WERROR_FLAGS_$(architecture) += -Wno-error=cast-align
 			-Wno-error=format-truncation ;