diff --git a/KSHObjcUML/KSHObjcUML.m b/KSHObjcUML/KSHObjcUML.m
index e7ecfd8..3c36e87 100644
--- a/KSHObjcUML/KSHObjcUML.m
+++ b/KSHObjcUML/KSHObjcUML.m
@@ -57,7 +57,8 @@ - (NSString *)projectName
 {
     NSString *tempProjectName = [VWKProject projectForKeyWindow].projectOriginalName;
     if (tempProjectName) {
-        _projectName = tempProjectName;
+        // When the project name contains “ ” replace to "_"
+        _projectName = [tempProjectName stringByReplacingOccurrencesOfString:@" " withString:@"_"];
     }
     return _projectName;
 }