diff --git a/lib/compiling/GScompiler.js b/lib/compiling/GScompiler.js
index 96f43553..5b6634ae 100644
--- a/lib/compiling/GScompiler.js
+++ b/lib/compiling/GScompiler.js
@@ -633,6 +633,18 @@ where compile() was called, in untrusted/run.js.
 					}
 				}
 
+				start = 0
+				const bindmethodpatt = new RegExp('(\\w+)\\.(\\w+)\\s*')
+				while (true) { // convert all classinstance.classmethod without parens to classinstance.classmethod.bind(classinstance)
+					m = line.slice(start).match(bindmethodpatt)
+					if (m === null) break
+					if (classinstances.indexOf(m[1]) >= 0 && classmethods.indexOf(m[2]) >= 0 && 
+								(start+m.index+m[0].length >= line.length || line[start+m.index+m[0].length] != '(')) {
+						line = line.slice(0,start+m.index)+line.slice(start+m.index).replace(m[2], m[2]+'.bind('+m[1]+')')
+						start += m.index+m[0].length+m[1].length+7
+					} else start += m.index+m[0].length
+				}
+
 				if (!declaration) { // not function declaration nor class declaration
 					const leftpatt = new RegExp('^(\\w+)\\s*=\\s*') // find p = .....
 					var left = null, right = line