diff --git a/packages/metro-config/src/__tests__/__snapshots__/loadConfig-test.js.snap b/packages/metro-config/src/__tests__/__snapshots__/loadConfig-test.js.snap
index 98a02df0f9..7c91d6d818 100644
--- a/packages/metro-config/src/__tests__/__snapshots__/loadConfig-test.js.snap
+++ b/packages/metro-config/src/__tests__/__snapshots__/loadConfig-test.js.snap
@@ -31,7 +31,6 @@ Object {
       "mp3",
       "wav",
       "html",
-      "json",
       "pdf",
       "yaml",
       "yml",
@@ -169,7 +168,6 @@ Object {
       "mp3",
       "wav",
       "html",
-      "json",
       "pdf",
       "yaml",
       "yml",
@@ -307,7 +305,6 @@ Object {
       "mp3",
       "wav",
       "html",
-      "json",
       "pdf",
       "yaml",
       "yml",
@@ -445,7 +442,6 @@ Object {
       "mp3",
       "wav",
       "html",
-      "json",
       "pdf",
       "yaml",
       "yml",
diff --git a/packages/metro-config/src/defaults/defaults.js b/packages/metro-config/src/defaults/defaults.js
index 8ff6633217..ef7c7e9eb0 100644
--- a/packages/metro-config/src/defaults/defaults.js
+++ b/packages/metro-config/src/defaults/defaults.js
@@ -38,7 +38,6 @@ exports.assetExts = [
   'wav',
   // Document formats
   'html',
-  'json',
   'pdf',
   'yaml',
   'yml',