diff --git a/ca-es/groovy-ca.html.markdown b/ca-es/groovy-ca.html.markdown
index 57674970..f0a9adbe 100644
--- a/ca-es/groovy-ca.html.markdown
+++ b/ca-es/groovy-ca.html.markdown
@@ -233,10 +233,12 @@ for (i in array) {
 
 //Itera per un mapa
 def map = ['name':'Roberto', 'framework':'Grails', 'language':'Groovy']
-x = 0
+x = ""
 for ( e in map ) {
     x += e.value
+    x += " "
 }
+assert x.equals("Roberto Grails Groovy ")
 
 /*
   Operadors
diff --git a/es-es/groovy-es.html.markdown b/es-es/groovy-es.html.markdown
index 799fc609..262d5e6a 100644
--- a/es-es/groovy-es.html.markdown
+++ b/es-es/groovy-es.html.markdown
@@ -232,10 +232,12 @@ for (i in array) {
 
 // Iterando sobre un mapa
 def map = ['name':'Roberto', 'framework':'Grails', 'language':'Groovy']
-x = 0
+x = ""
 for ( e in map ) {
     x += e.value
+    x += " "
 }
+assert x.equals("Roberto Grails Groovy ")
 
 /*
   Operadores
diff --git a/groovy.html.markdown b/groovy.html.markdown
index a3a45757..efbb2b32 100644
--- a/groovy.html.markdown
+++ b/groovy.html.markdown
@@ -230,10 +230,12 @@ for (i in array) {
 
 //Iterate over a map
 def map = ['name':'Roberto', 'framework':'Grails', 'language':'Groovy']
-x = 0
+x = ""
 for ( e in map ) {
     x += e.value
+    x += " "
 }
+assert x.equals("Roberto Grails Groovy ")
 
 /*
   Operators
diff --git a/pt-br/groovy-pt.html.markdown b/pt-br/groovy-pt.html.markdown
index 25e123c0..aed23df1 100644
--- a/pt-br/groovy-pt.html.markdown
+++ b/pt-br/groovy-pt.html.markdown
@@ -226,10 +226,12 @@ for (i in array) {
 
 //Itera sobre um mapa
 def map = ['name':'Roberto', 'framework':'Grails', 'language':'Groovy']
-x = 0
+x = ""
 for ( e in map ) {
     x += e.value
+    x += " "
 }
+assert x.equals("Roberto Grails Groovy ")
 
 /*
   Operadores
diff --git a/zh-cn/groovy-cn.html.markdown b/zh-cn/groovy-cn.html.markdown
index 562a0284..0e7a020c 100644
--- a/zh-cn/groovy-cn.html.markdown
+++ b/zh-cn/groovy-cn.html.markdown
@@ -219,10 +219,12 @@ for (i in array) {
 
 //遍历映射
 def map = ['name':'Roberto', 'framework':'Grails', 'language':'Groovy']
-x = 0
+x = ""
 for ( e in map ) {
     x += e.value
+    x += " "
 }
+assert x.equals("Roberto Grails Groovy ")
 
 /*
   运算符