diff --git a/src/main.c b/src/main.c
index b9d5d3b..6a286ed 100644
--- a/src/main.c
+++ b/src/main.c
@@ -768,7 +768,7 @@ int main(void)
 
 				case ConvConstVoltage:
 					if(time_in_state == 0) {
-						iErr = 0;
+						iErr = fxp_from_int(280);
 					}
 
 					// calculate error values