diff --git a/ext/dom/document.c b/ext/dom/document.c
index 2d6556c63bd..914b659f87e 100644
--- a/ext/dom/document.c
+++ b/ext/dom/document.c
@@ -1526,6 +1526,8 @@ _dom_document_schema_validate(INTERNAL_FUNCTION_PARAMETERS, int type)
 		/* If loading from memory, we need to set the base directory for the document 
 		   but it is not apparent how to do that for schema's */
 		break;
+	default:
+		return;
 	}
 
 	xmlSchemaSetParserErrors(parser,
@@ -1609,6 +1611,8 @@ _dom_document_relaxNG_validate(INTERNAL_FUNCTION_PARAMETERS, int type)
 		/* If loading from memory, we need to set the base directory for the document 
 		   but it is not apparent how to do that for schema's */
 		break;
+	default:
+		return;
 	}
 
 	xmlRelaxNGSetParserErrors(parser,
diff --git a/ext/dom/namednodemap.c b/ext/dom/namednodemap.c
index 1e4eefbe23c..689ae87994d 100644
--- a/ext/dom/namednodemap.c
+++ b/ext/dom/namednodemap.c
@@ -200,6 +200,8 @@ PHP_FUNCTION(dom_namednodemap_item)
 				itemnode = curnode;
 			}
 		}
+	} else {
+		RETVAL_NULL();
 	}
 
 	if (itemnode) {
diff --git a/ext/dom/nodelist.c b/ext/dom/nodelist.c
index 5ecd2d763e7..56256987c78 100644
--- a/ext/dom/nodelist.c
+++ b/ext/dom/nodelist.c
@@ -134,6 +134,8 @@ PHP_FUNCTION(dom_nodelist_item)
 				}
 			}
 		}
+	} else {
+		RETVAL_NULL();
 	}
 
 	if (itemnode) {