diff --git a/lib/manager/composer/extract.js b/lib/manager/composer/extract.js
index b5d5e418a07cc9ec394f821b2ceadd46ea791d4d..262e8935f0e48f945d386c13f3523b313b939ccf 100644
--- a/lib/manager/composer/extract.js
+++ b/lib/manager/composer/extract.js
@@ -56,14 +56,11 @@ async function extractPackageFile(content, fileName) {
   let lockParsed;
   if (lockContents) {
     logger.debug({ packageFile: fileName }, 'Found composer lock file');
-    res.composerLock = lockfilePath;
     try {
       lockParsed = JSON.parse(lockContents);
     } catch (err) /* istanbul ignore next */ {
       logger.warn({ err }, 'Error processing composer.lock');
     }
-  } else {
-    res.composerLock = false;
   }
 
   // handle composer.json repositories
diff --git a/test/manager/composer/__snapshots__/extract.spec.js.snap b/test/manager/composer/__snapshots__/extract.spec.js.snap
index 7d264255e87f0fa84fafa42b199f682af98cdbbc..3b42ee38d9273f4d88771f06f144b390e3ab5b90 100644
--- a/test/manager/composer/__snapshots__/extract.spec.js.snap
+++ b/test/manager/composer/__snapshots__/extract.spec.js.snap
@@ -2,7 +2,6 @@
 
 exports[`lib/manager/composer/extract extractPackageFile() extracts dependencies with lock file 1`] = `
 Object {
-  "composerLock": "composer.lock",
   "deps": Array [
     Object {
       "currentValue": ">=5.3.2",
@@ -221,7 +220,6 @@ Object {
 
 exports[`lib/manager/composer/extract extractPackageFile() extracts dependencies with no lock file 1`] = `
 Object {
-  "composerLock": false,
   "deps": Array [
     Object {
       "currentValue": ">=5.3.2",
@@ -440,7 +438,6 @@ Object {
 
 exports[`lib/manager/composer/extract extractPackageFile() extracts object registryUrls 1`] = `
 Object {
-  "composerLock": false,
   "deps": Array [
     Object {
       "currentValue": ">=5.5",
@@ -569,7 +566,6 @@ Object {
 
 exports[`lib/manager/composer/extract extractPackageFile() extracts object repositories and registryUrls with lock file 1`] = `
 Object {
-  "composerLock": "composer.lock",
   "deps": Array [
     Object {
       "currentValue": "*",
@@ -607,7 +603,6 @@ Object {
 
 exports[`lib/manager/composer/extract extractPackageFile() extracts registryUrls 1`] = `
 Object {
-  "composerLock": false,
   "deps": Array [
     Object {
       "currentValue": "*",
@@ -648,7 +643,6 @@ Object {
 
 exports[`lib/manager/composer/extract extractPackageFile() extracts repositories and registryUrls 1`] = `
 Object {
-  "composerLock": false,
   "deps": Array [
     Object {
       "currentValue": "*",