diff --git a/src/internal-packages/query/lib/store/index.jsx b/src/internal-packages/query/lib/store/index.jsx
index eaa3b52c850..87deedd7968 100644
--- a/src/internal-packages/query/lib/store/index.jsx
+++ b/src/internal-packages/query/lib/store/index.jsx
@@ -359,7 +359,7 @@ const QueryStore = Reflux.createStore({
   },
 
   storeDidUpdate(prevState) {
-    debug('query store changed from %j to %j', prevState, this.state);
+    debug('query store changed from', prevState, 'to', this.state);
   }
 
 });
diff --git a/src/internal-packages/schema/lib/d3/coordinates.js b/src/internal-packages/schema/lib/d3/coordinates.js
index e442e3f7400..a642d5d3967 100644
--- a/src/internal-packages/schema/lib/d3/coordinates.js
+++ b/src/internal-packages/schema/lib/d3/coordinates.js
@@ -55,7 +55,7 @@ const minicharts_d3fns_geo = function() {
     // const project = d3.geo.mercator();
     // const unproject = d3.geo.mercator().invert;
 
-    const update = null;
+    let update = null;
 
     function querybuilder() {
       if (circleCenter && circleOuter) {
diff --git a/src/internal-packages/schema/lib/d3/d3-tip.js b/src/internal-packages/schema/lib/d3/d3-tip.js
index 9c9cf52d8c1..ebe140c900e 100644
--- a/src/internal-packages/schema/lib/d3/d3-tip.js
+++ b/src/internal-packages/schema/lib/d3/d3-tip.js
@@ -20,10 +20,10 @@
   //
   // Returns a tip
   return function() {
-    const direction = d3_tip_direction;
-    const offset = d3_tip_offset;
-    const html = d3_tip_html;
-    const node = initNode();
+    let direction = d3_tip_direction;
+    let offset = d3_tip_offset;
+    let node = initNode();
+    let html = d3_tip_html;
     let svg = null;
     let point = null;
     let target = null;
@@ -50,11 +50,12 @@
         poffset = offset.apply(this, args),
         dir = direction.apply(this, args),
         nodel = getNodeEl(),
-        i = directions.length,
-        coords = null,
         scrollTop = document.documentElement.scrollTop || document.body.scrollTop,
         scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;
 
+      let i = directions.length,
+        coords = null;
+
       nodel.html(content)
         .style({
           opacity: 1,
diff --git a/src/internal-packages/schema/lib/store/index.jsx b/src/internal-packages/schema/lib/store/index.jsx
index 041e15e79dd..b21ede1919b 100644
--- a/src/internal-packages/schema/lib/store/index.jsx
+++ b/src/internal-packages/schema/lib/store/index.jsx
@@ -195,7 +195,7 @@ const SchemaStore = Reflux.createStore({
   },
 
   storeDidUpdate(prevState) {
-    debug('schema store changed from %j to %j', prevState, this.state);
+    debug('schema store changed from', prevState, 'to', this.state);
   }
 
 });
diff --git a/src/internal-packages/status/lib/store/index.jsx b/src/internal-packages/status/lib/store/index.jsx
index 2740cb2b0fa..3124a0d7007 100644
--- a/src/internal-packages/status/lib/store/index.jsx
+++ b/src/internal-packages/status/lib/store/index.jsx
@@ -196,7 +196,7 @@ const StatusStore = Reflux.createStore({
   },
 
   storeDidUpdate(prevState) {
-    debug('status store changed from %j to %j', prevState, this.state);
+    debug('status store changed from', prevState, 'to', this.state);
   }
 });