diff --git a/src/main/java/dan200/computercraft/core/apis/http/HTTPRequest.java b/src/main/java/dan200/computercraft/core/apis/http/HTTPRequest.java
index 8ff731c12..786dc84fc 100644
--- a/src/main/java/dan200/computercraft/core/apis/http/HTTPRequest.java
+++ b/src/main/java/dan200/computercraft/core/apis/http/HTTPRequest.java
@@ -143,7 +143,7 @@ public void run()
                 connection.setRequestProperty( "content-type", "application/x-www-form-urlencoded; charset=utf-8" );
                 connection.setRequestProperty( "content-encoding", "UTF-8" );
             }
-            if( m_postText != null )
+            if( m_headers != null )
             {
                 for( Map.Entry<String, String> header : m_headers.entrySet() )
                 {