diff --git a/index.js b/index.js
index 60130c2e0..791da87b1 100755
--- a/index.js
+++ b/index.js
@@ -170,7 +170,11 @@ class NYC {
       const coverage = coverageFinder()
       const lastCoverage = this.instrumenter().lastFileCoverage()
       if (lastCoverage) {
-        coverage[lastCoverage.path] = lastCoverage
+        coverage[lastCoverage.path] = {
+          ...lastCoverage,
+          // Only use this data if we don't have it without `all: true`
+          all: true
+        }
       }
     })
     this.fakeRequire = false
diff --git a/lib/instrumenters/noop.js b/lib/instrumenters/noop.js
index a134ea5dd..7efe8bd80 100644
--- a/lib/instrumenters/noop.js
+++ b/lib/instrumenters/noop.js
@@ -1,4 +1,3 @@
-const { FileCoverage } = require('istanbul-lib-coverage').classes
 const { readInitialCoverage } = require('istanbul-lib-instrument')
 
 function NOOP () {
@@ -6,7 +5,7 @@ function NOOP () {
     instrumentSync (code, filename) {
       const extracted = readInitialCoverage(code)
       if (extracted) {
-        this.fileCoverage = new FileCoverage(extracted.coverageData)
+        this.fileCoverage = extracted.coverageData
       } else {
         this.fileCoverage = null
       }