diff --git a/api/soap/mc_issue_attachment_api.php b/api/soap/mc_issue_attachment_api.php
index a915cf3217..51e29aaf66 100644
--- a/api/soap/mc_issue_attachment_api.php
+++ b/api/soap/mc_issue_attachment_api.php
@@ -50,7 +50,7 @@ function mc_issue_attachment_add( $p_username, $p_password, $p_issue_id, $p_name
 		if ( !access_has_bug_level( config_get( 'upload_bug_file_threshold' ), $p_issue_id, $t_user_id ) ) {
  			return new soap_fault( 'Client', '', 'Access Denied' );
 		}
-		return mci_file_add( $p_issue_id, $p_name, $p_content, $p_file_type, 'bug' );
+		return mci_file_add( $p_issue_id, $p_name, base64_decode( $p_content ), $p_file_type, 'bug' );
  	}
  	
   	/**