diff --git a/ChangeLog b/ChangeLog
index f0b649e..cec859d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -18,6 +18,8 @@
 	instead of closeAllProjects.
 	* Modules/Editors/ProjectCenter/PCEditor.m:
 	(_createWindow): Set "edited" flag according to current state.
+	* Framework/PCProjectBuilder.m:
+	(prebuildCheck): Check if project has edited files.
 
 2009-02-15 14:14-EST Gregory John Casamento <greg_casamento@yahoo.com>
 
diff --git a/Framework/PCProjectBuilder.m b/Framework/PCProjectBuilder.m
index 653db28..2dc7222 100644
--- a/Framework/PCProjectBuilder.m
+++ b/Framework/PCProjectBuilder.m
@@ -460,10 +460,11 @@
   PCFileManager      *pcfm = [PCFileManager defaultManager];
   NSFileManager      *fm = [NSFileManager defaultManager];
   NSString           *projectBuildDir;
+  PCProjectEditor    *projectEditor;
 
   NSLog (@"BuildDir = %@", buildDir);
 
-  // Checking prerequisites
+  // Checking for project 'edited' state 
   if ([project isProjectChanged])
     {
       int ret;
@@ -486,6 +487,34 @@
       [project save];
     }
 
+  // Checking if edited files exist
+  projectEditor = [project projectEditor];
+  if ([projectEditor hasModifiedFiles])
+    {
+      int             ret;
+
+      ret = NSRunAlertPanel(@"Project Build",
+  			    @"Project has unsaved files.\n"
+  			    "Do you want to save files before build a project?",
+  			    @"Review Unsaved", @"Build Anyway", @"Stop Build");
+      switch (ret)
+	{
+	case NSAlertDefaultReturn: // Review Unsaved
+	  if ([projectEditor reviewUnsaved:[projectEditor modifiedFiles]] == NO)
+	    { // Operation was canceled
+	      return NO;
+	    }
+	  break;
+
+	case NSAlertAlternateReturn: // Build Anyway
+	  break;
+
+	case NSAlertOtherReturn: // Stop Build
+      	  return NO;
+	  break;
+	}
+    }
+
   // Get make tool path
   if (![self setMakePath])
     {