diff --git a/src/app/calculators/macrorugo/macrorugo.en.json b/src/app/calculators/macrorugo/macrorugo.en.json
index 791f9e4508b4123204f21ab49ff6b56715a03306..2249d648b4239b55730fc2dba8f94637261504b2 100644
--- a/src/app/calculators/macrorugo/macrorugo.en.json
+++ b/src/app/calculators/macrorugo/macrorugo.en.json
@@ -12,10 +12,12 @@
     "PBD": "Diameter",
     "PBH": "Height",
     "Cd0": "Shape (1 for round, 2 for square)",
+    "Strickler": "Equivalent strickler",
     "UNIT_PV": "W/m³",
     "UNIT_Q_GUIDETECH": "m³/s",
     "UNIT_V_GUIDETECH": "m/s",
     "UNIT_VDEB": "m/s",
     "UNIT_VMAX": "m/s",
-    "UNIT_ZF2": "m"
+    "UNIT_ZF2": "m",
+    "UNIT_STRICKLER": "m1/3s-1"
 }
\ No newline at end of file
diff --git a/src/app/calculators/macrorugo/macrorugo.fr.json b/src/app/calculators/macrorugo/macrorugo.fr.json
index 6ab912ed616c5fe7baa7cc84cd9161df2582902f..4d63902fc05c3cdc62a22081626712e0326e33ed 100644
--- a/src/app/calculators/macrorugo/macrorugo.fr.json
+++ b/src/app/calculators/macrorugo/macrorugo.fr.json
@@ -12,10 +12,12 @@
     "PBD": "Diamètre",
     "PBH": "Hauteur",
     "Cd0": "Forme (1 pour rond, 2 pour carré)",
+    "Strickler": "Strickler équivalent",
     "UNIT_PV": "W/m³",
     "UNIT_Q_GUIDETECH": "m³/s",
     "UNIT_V_GUIDETECH": "m/s",
     "UNIT_VDEB": "m/s",
     "UNIT_VMAX": "m/s",
-    "UNIT_ZF2": "m"
+    "UNIT_ZF2": "m",
+    "UNIT_STRICKLER": "m1/3s-1"
 }
\ No newline at end of file