diff --git a/libraries/shared/src/CollisionInfo.cpp b/libraries/shared/src/CollisionInfo.cpp
index 5d74d591c6..f20ffe83e0 100644
--- a/libraries/shared/src/CollisionInfo.cpp
+++ b/libraries/shared/src/CollisionInfo.cpp
@@ -16,7 +16,7 @@ CollisionList::CollisionList(int maxSize) :
 
 CollisionInfo* CollisionList::getNewCollision() {
     // return pointer to existing CollisionInfo, or NULL of list is full
-    return (_size < _maxSize) ? &(_collisions[++_size]) : NULL;
+    return (_size < _maxSize) ? &(_collisions[_size++]) : NULL;
 }
 
 CollisionInfo* CollisionList::getCollision(int index) {