diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/PluginResources.properties b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/PluginResources.properties
index c6a1b7b5dd6..d68512b5781 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/PluginResources.properties
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/PluginResources.properties
@@ -571,3 +571,4 @@ StringVariableSelectionDialog_columnDescription=&Variable Description:
 NewCfgDialog.0=
 NewCfgDialog.1=
 NewCfgDialog.2=Cannot create new configuration
+CDTMainWizardPage.0=Project name cannot contain '\#' symbol
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/wizards/CDTMainWizardPage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/wizards/CDTMainWizardPage.java
index 01714d452b9..c574f407e9a 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/wizards/CDTMainWizardPage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/wizards/CDTMainWizardPage.java
@@ -337,6 +337,12 @@ import org.eclipse.cdt.internal.ui.CPluginImages;
 	            return false;
 	        }
 
+	        if (projectFieldContents.indexOf('#') >= 0) {
+	            setErrorMessage(UIMessages.getString("CDTMainWizardPage.0"));	             //$NON-NLS-1$
+	            return false;
+	        }
+	        
+	        
 	        boolean bad = true; // should we treat existing project as error
 	        
 	        IProject handle = getProjectHandle();