diff --git a/ui/src/shared/annotations/helpers.js b/ui/src/shared/annotations/helpers.js
index 2277533df..739378372 100644
--- a/ui/src/shared/annotations/helpers.js
+++ b/ui/src/shared/annotations/helpers.js
@@ -1,3 +1,5 @@
+export const ANNOTATION_MIN_DELTA = 0.5
+
 export const ADDING = 'adding'
 export const EDITING = 'editing'
 
diff --git a/ui/src/shared/components/AnnotationPoint.js b/ui/src/shared/components/AnnotationPoint.js
index 929506b85..0d329c7c0 100644
--- a/ui/src/shared/components/AnnotationPoint.js
+++ b/ui/src/shared/components/AnnotationPoint.js
@@ -1,7 +1,7 @@
 import React, {PropTypes} from 'react'
 import {connect} from 'react-redux'
 
-import {EDITING} from 'shared/annotations/helpers'
+import {ANNOTATION_MIN_DELTA, EDITING} from 'shared/annotations/helpers'
 import * as schema from 'shared/schemas'
 import * as actions from 'shared/actions/annotations'
 import AnnotationTooltip from 'shared/components/AnnotationTooltip'
@@ -55,14 +55,12 @@ class AnnotationPoint extends React.Component {
     let newTime = dygraph.toDataXCoord(graphX)
     const oldTime = +startTime
 
-    const minPercentChange = 0.5
-
     if (
       Math.abs(
         dygraph.toPercentXCoord(newTime) - dygraph.toPercentXCoord(oldTime)
       ) *
         100 <
-      minPercentChange
+      ANNOTATION_MIN_DELTA
     ) {
       return
     }
diff --git a/ui/src/shared/components/AnnotationSpan.js b/ui/src/shared/components/AnnotationSpan.js
index faba4c384..a281600f3 100644
--- a/ui/src/shared/components/AnnotationSpan.js
+++ b/ui/src/shared/components/AnnotationSpan.js
@@ -1,7 +1,7 @@
 import React, {PropTypes} from 'react'
 import {connect} from 'react-redux'
 
-import {EDITING} from 'shared/annotations/helpers'
+import {ANNOTATION_MIN_DELTA, EDITING} from 'shared/annotations/helpers'
 import * as schema from 'shared/schemas'
 import * as actions from 'shared/actions/annotations'
 import AnnotationTooltip from 'shared/components/AnnotationTooltip'
@@ -65,14 +65,12 @@ class AnnotationSpan extends React.Component {
     const graphX = pageX - left
     let newTime = dygraph.toDataXCoord(graphX)
 
-    const minPercentChange = 0.5
-
     if (
       Math.abs(
         dygraph.toPercentXCoord(newTime) - dygraph.toPercentXCoord(oldTime)
       ) *
         100 <
-      minPercentChange
+      ANNOTATION_MIN_DELTA
     ) {
       return
     }