diff --git a/src/main/java/cokr/xit/foundation/web/WebClient.java b/src/main/java/cokr/xit/foundation/web/WebClient.java
index 04df14d..03114fb 100644
--- a/src/main/java/cokr/xit/foundation/web/WebClient.java
+++ b/src/main/java/cokr/xit/foundation/web/WebClient.java
@@ -90,7 +90,7 @@ public class WebClient {
 				conf.respHandler.accept(hresp);
 			}
 		} catch (Throwable e) {
-			throw Assert.runtimeException(e);
+			conf.errorHandler.accept(Assert.rootCause(e));
 		}
 
 	}
@@ -111,7 +111,7 @@ public class WebClient {
 				conf.respHandler.accept(hresp);
 			}
 		} catch (Throwable e) {
-			throw Assert.runtimeException(e);
+			conf.errorHandler.accept(Assert.rootCause(e));
 		}
 	}
 
@@ -129,6 +129,9 @@ public class WebClient {
 			System.out.println("status: " + hresp.statusCode());
 			System.out.println(hresp.body());
 		};
+		private Consumer<Throwable> errorHandler = t -> {
+			System.out.println(t.getMessage());
+		};
 
 		public Config header(String key, String value) {
 			if (headers == null)
@@ -169,6 +172,11 @@ public class WebClient {
 			return this;
 		}
 
+		public Config onError(Consumer<Throwable> handler) {
+			errorHandler = handler;
+			return this;
+		}
+
 		HttpRequest get() {
 			String queryString = getParams();
 			if (!queryString.isEmpty())