diff --git a/core/classes/MantisCoreWikiPlugin.class.php b/core/classes/MantisCoreWikiPlugin.class.php
index 4ca71fcb27..7737131e88 100644
--- a/core/classes/MantisCoreWikiPlugin.class.php
+++ b/core/classes/MantisCoreWikiPlugin.class.php
@@ -71,7 +71,7 @@ function base_url( $p_project_id = null ) {
 
 		$t_namespace = plugin_config_get( 'root_namespace' );
 		if( !is_blank( $t_namespace ) ) {
-			$t_base .= urlencode( $t_namespace ) . ':';
+			$t_base .= $t_namespace . ':';
 		}
 
 		if( !is_null( $p_project_id ) && $p_project_id != ALL_PROJECTS ) {
@@ -130,7 +130,7 @@ function base_url( $p_project_id = null ) {
 		if( !is_null( $p_project_id ) && $p_project_id != ALL_PROJECTS ) {
 			$t_base .= urlencode( project_get_name( $p_project_id ) ) . ':';
 		} else {
-			$t_base .= urlencode( plugin_config_get( 'root_namespace' ) );
+			$t_base .= plugin_config_get( 'root_namespace' );
 		}
 		return $t_base;
 	}
@@ -185,7 +185,7 @@ function base_url( $p_project_id = null ) {
 
 		$t_namespace = plugin_config_get( 'root_namespace' );
 		if( !is_blank( $t_namespace ) ) {
-			$t_base .= urlencode( $t_namespace ) . '/';
+			$t_base .= $t_namespace . '/';
 		}
 
 		if( !is_null( $p_project_id ) && $p_project_id != ALL_PROJECTS ) {
@@ -244,7 +244,7 @@ function base_url( $p_project_id = null ) {
 
 		$t_namespace = ucfirst( plugin_config_get( 'root_namespace' ) );
 		if( !is_blank( $t_namespace ) ) {
-			$t_base .= urlencode( $t_namespace );
+			$t_base .= $t_namespace;
 		}
 
 		if( !is_null( $p_project_id ) && $p_project_id != ALL_PROJECTS ) {
@@ -303,7 +303,7 @@ function base_url( $p_project_id = null ) {
 		if( !is_null( $p_project_id ) && $p_project_id != ALL_PROJECTS ) {
 			$t_base .= urlencode( project_get_name( $p_project_id ) ) . '/';
 		} else {
-			$t_base .= urlencode( plugin_config_get( 'root_namespace' ) );
+			$t_base .= plugin_config_get( 'root_namespace' );
 		}
 		return $t_base;
 	}