diff --git a/build/jam/ArchitectureRules b/build/jam/ArchitectureRules
index bd833c7224..375e0c44ed 100644
--- a/build/jam/ArchitectureRules
+++ b/build/jam/ArchitectureRules
@@ -673,6 +673,7 @@ rule ArchitectureSetupWarnings architecture
 	EnableWerror src bin package ;
 	EnableWerror src bin package_repo ;
 	EnableWerror src bin pkgman ;
+	EnableWerror src libs bsd ;
 	EnableWerror src apps ;
 	EnableWerror src kits ;
 	EnableWerror src preferences ;
diff --git a/src/libs/bsd/fgetln.c b/src/libs/bsd/fgetln.c
index 65b3194a06..944d23955b 100644
--- a/src/libs/bsd/fgetln.c
+++ b/src/libs/bsd/fgetln.c
@@ -9,6 +9,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 
 #define LINE_LENGTH 4096
diff --git a/src/libs/bsd/getpass.c b/src/libs/bsd/getpass.c
index bdd993c9a5..45676c0b3e 100644
--- a/src/libs/bsd/getpass.c
+++ b/src/libs/bsd/getpass.c
@@ -9,6 +9,7 @@
 
 #include <stdbool.h>
 #include <stdio.h>
+#include <string.h>
 #include <termios.h>
 #include <unistd.h>