diff --git a/libraries/AP_RangeFinder/RangeFinder.h b/libraries/AP_RangeFinder/RangeFinder.h
index c071d865f6825b28a07e846a0f56e63b4fe4bb5b..bef3a9abaf93fb75ed251fb1ca48abb33485b4a8 100644
--- a/libraries/AP_RangeFinder/RangeFinder.h
+++ b/libraries/AP_RangeFinder/RangeFinder.h
@@ -22,7 +22,7 @@
 #include <AP_Param.h>
 
 // Maximum number of range finder instances available on this platform
-#define RANGEFINDER_MAX_INSTANCES 2
+#define RANGEFINDER_MAX_INSTANCES 1
 
 class AP_RangeFinder_Backend;