diff --git a/src/physics/matter-js/lib/body/Composite.js b/src/physics/matter-js/lib/body/Composite.js
index 68c60ddec..2a6f3f05e 100644
--- a/src/physics/matter-js/lib/body/Composite.js
+++ b/src/physics/matter-js/lib/body/Composite.js
@@ -28,13 +28,13 @@ var Body = require('./Body');
      * @return {composite} A new composite
      */
     Composite.create = function(options) {
-        return Common.extend({ 
+        return Common.extend({
             id: Common.nextId(),
             type: 'composite',
             parent: null,
             isModified: false,
-            bodies: [], 
-            constraints: [], 
+            bodies: [],
+            constraints: [],
             composites: [],
             label: 'Composite',
             plugin: {},
@@ -47,7 +47,7 @@ var Body = require('./Body');
     };
 
     /**
-     * Sets the composite's `isModified` flag. 
+     * Sets the composite's `isModified` flag.
      * If `updateParents` is true, all parents will be set (default: false).
      * If `updateChildren` is true, all children will be set (default: false).
      * @method setModified
@@ -246,6 +246,10 @@ var Body = require('./Body');
         var position = Common.indexOf(composite.bodies, body);
         if (position !== -1) {
             Composite.removeBodyAt(composite, position);
+
+            // remove sleeping to allow pair removal
+            body.isSleeping = false;
+            body.sleepCounter = 0;
         }
 
         if (deep) {
@@ -337,7 +341,7 @@ var Body = require('./Body');
                 Composite.clear(composite.composites[i], keepStatic, true);
             }
         }
-        
+
         if (keepStatic) {
             composite.bodies = composite.bodies.filter(function(body) { return body.isStatic; });
         } else {
@@ -448,8 +452,8 @@ var Body = require('./Body');
         if (!objects)
             return null;
 
-        object = objects.filter(function(object) { 
-            return object.id.toString() === id.toString(); 
+        object = objects.filter(function(object) {
+            return object.id.toString() === id.toString();
         });
 
         return object.length === 0 ? null : object[0];
@@ -488,7 +492,7 @@ var Body = require('./Body');
     };
 
     /**
-     * Translates all children in the composite by a given vector relative to their current positions, 
+     * Translates all children in the composite by a given vector relative to their current positions,
      * without imparting any velocity.
      * @method translate
      * @param {composite} composite
@@ -522,7 +526,7 @@ var Body = require('./Body');
             var body = bodies[i],
                 dx = body.position.x - point.x,
                 dy = body.position.y - point.y;
-                
+
             Body.setPosition(body, {
                 x: point.x + (dx * cos - dy * sin),
                 y: point.y + (dx * sin + dy * cos)
@@ -550,7 +554,7 @@ var Body = require('./Body');
             var body = bodies[i],
                 dx = body.position.x - point.x,
                 dy = body.position.y - point.y;
-                
+
             Body.setPosition(body, {
                 x: point.x + dx * scaleX,
                 y: point.y + dy * scaleY
diff --git a/src/physics/matter-js/lib/collision/Pairs.js b/src/physics/matter-js/lib/collision/Pairs.js
index 211725587..482fd61be 100644
--- a/src/physics/matter-js/lib/collision/Pairs.js
+++ b/src/physics/matter-js/lib/collision/Pairs.js
@@ -53,6 +53,8 @@ var Common = require('../core/Common');
             collisionActiveIndex = 0,
             collision,
             pair,
+            bodyA,
+            bodyB,
             i;
 
         for (i = 0; i < collisionsLength; i++) {
@@ -90,11 +92,36 @@ var Common = require('../core/Common');
             pair = pairsList[i];
 
             if (pair.timeUpdated < timestamp) {
-                pairSetActive(pair, false, timestamp);
-                collisionEnd[collisionEndIndex++] = pair;
+
+                bodyA = pair.collision.bodyA;
+                bodyB = pair.collision.bodyB;
+
+                // if ((bodyA.isSleeping && bodyB.isSleeping) || bodyA.isStatic || bodyB.isStatic)
+                // {
+                //     continue;
+                // }
+
+                // keep pair if it is sleeping but not both static
+                // if ((bodyA.isSleeping || bodyA.isStatic) || (bodyB.isSleeping || bodyB.isStatic) && !(bodyA.isStatic && bodyB.isStatic)) {
+                //     pairSetActive(pair, true, timestamp);
+                //     continue;
+                // }
+
+                // pairSetActive(pair, false, timestamp);
+                // collisionEnd[collisionEndIndex++] = pair;
+
+                // keep pair if it is sleeping but not both static
+                // if ((bodyA.isSleeping || bodyA.isStatic) && (bodyB.isSleeping || bodyB.isStatic)
+                // && !(bodyA.isStatic && bodyB.isStatic)) {
+                // continue;
+                // }
 
                 // remove inactive pairs
-                if (!pair.collision.bodyA.isSleeping && !pair.collision.bodyB.isSleeping) {
+                // if (!bodyA.isSleeping && !bodyB.isSleeping && !bodyA.isStatic && !bodyB.isStatic) {
+                if ((!bodyA.isSleeping || !bodyA.isStatic) && (!bodyB.isSleeping || !bodyB.isStatic)) {
+                    console.log('deleted pair', bodyA, bodyB);
+                    pairSetActive(pair, false, timestamp);
+                    collisionEnd[collisionEndIndex++] = pair;
                     delete pairsTable[pair.id];
                 }
             } else {