diff --git a/src/lang/fr_FR.h b/src/lang/fr_FR.h
index f84d3995..a752cc6b 100644
--- a/src/lang/fr_FR.h
+++ b/src/lang/fr_FR.h
@@ -30,6 +30,7 @@
 #define D_FILE_SIZE_KILOBYTES "Kio"
 #define D_FILE_SIZE_MEGABYTES "Mio"
 #define D_FILE_SIZE_GIGABYTES "Gio"
+#define D_FILE_SIZE_TERABYTES "TiB"
 #define D_FILE_SIZE_DIVIDER 1024 // kibi or kilo bytes
 #define D_DECIMAL_POINT ","      // decimal comma or point