diff --git a/src/parseISO/index.js b/src/parseISO/index.js
index f9c57f707c..54d57c10d3 100644
--- a/src/parseISO/index.js
+++ b/src/parseISO/index.js
@@ -154,6 +154,12 @@ function splitDateString(dateString) {
   var array = dateString.split(patterns.dateTimeDelimiter)
   var timeString
 
+  // The regex match should only return at maximum two array elements.
+  // [date], [time], or [date, time].
+  if (array.length > 2) {
+    return dateStrings
+  }
+
   if (/:/.test(array[0])) {
     dateStrings.date = null
     timeString = array[0]
diff --git a/src/parseISO/test.js b/src/parseISO/test.js
index e9618ad59b..3bed0ab105 100644
--- a/src/parseISO/test.js
+++ b/src/parseISO/test.js
@@ -286,6 +286,14 @@ describe('parseISO', () => {
       })
     })
 
+    describe('date', () => {
+      it('returns `Invalid Date` when it contains spaces after the date', () => {
+        const result = parseISO('2014-02-11  basketball')
+        assert(result instanceof Date)
+        assert(isNaN(result))
+      })
+    })
+
     describe('time', () => {
       it('parses 24:00 as midnight of the next day', () => {
         const result = parseISO('2014-02-11T24:00')
@@ -321,6 +329,12 @@ describe('parseISO', () => {
         assert(result instanceof Date)
         assert(isNaN(result))
       })
+
+      it('returns `Invalid Date` when it contains spaces after the time', () => {
+        const result = parseISO('2014-02-11T21:59:00  basketball')
+        assert(result instanceof Date)
+        assert(isNaN(result))
+      })
     })
 
     describe('timezones', () => {