diff --git a/toolkit/components/downloads/ApplicationReputation.cpp b/toolkit/components/downloads/ApplicationReputation.cpp
index 9fdc8a103..6adefbb8b 100644
--- a/toolkit/components/downloads/ApplicationReputation.cpp
+++ b/toolkit/components/downloads/ApplicationReputation.cpp
@@ -467,7 +467,7 @@ static const char16_t* kBinaryFileExtensions[] = {
     u".isp", // IIS config
     //u".isu", // InstallShield
     u".jar", // Java
-    u".jnlp", // Java
+    //u".jnlp", // Java
     //u".job", // Windows
     u".js", // JavaScript script
     u".jse", // JScript
diff --git a/xpcom/io/nsLocalFileWin.cpp b/xpcom/io/nsLocalFileWin.cpp
index 103558e48..2b15cb0dd 100644
--- a/xpcom/io/nsLocalFileWin.cpp
+++ b/xpcom/io/nsLocalFileWin.cpp
@@ -3037,7 +3037,6 @@ nsLocalFile::IsExecutable(bool* aResult)
       "ins",
       "isp",
       "jar",         // java application bundle
-      "jnlp",        // java web start
       "js",
       "jse",
       "lnk",