diff --git a/Core/Src/PSE_unit.c b/Core/Src/PSE_unit.c
index 5450d8e..1591dfa 100644
--- a/Core/Src/PSE_unit.c
+++ b/Core/Src/PSE_unit.c
@@ -21,7 +21,7 @@ static void generate_default_units(pse_unit* units, pse_syringe* syringes, pse_s
 		units[i] = (pse_unit){
 	      .enabled = i%2,
 	      .port = i,
-	      .flow = 1500*i,
+	      .flow = 1500*(i+1),
 	      .volume = 0,
 	      .set_volume = 0,
 	      .syringe = &syringes[i],