diff --git a/libraries/AP_RangeFinder/RangeFinder.cpp b/libraries/AP_RangeFinder/RangeFinder.cpp
index c47edde95a..921c4f12ba 100644
--- a/libraries/AP_RangeFinder/RangeFinder.cpp
+++ b/libraries/AP_RangeFinder/RangeFinder.cpp
@@ -88,9 +88,9 @@ int RangeFinder::read()
 
 	// slew rate
 	if(raw_value > distance){
-		temp_dist = min(distance + 10, raw_value);
+		temp_dist = min(distance + 20, raw_value);
 	}else{
-		temp_dist = max(distance - 10, raw_value);
+		temp_dist = max(distance - 20, raw_value);
 	}
 
 	if(_num_averages > 0){