diff --git a/src/main/java/org/folio/edge/patron/PatronHandler.java b/src/main/java/org/folio/edge/patron/PatronHandler.java
index 920306d..ab5622b 100644
--- a/src/main/java/org/folio/edge/patron/PatronHandler.java
+++ b/src/main/java/org/folio/edge/patron/PatronHandler.java
@@ -86,6 +86,7 @@ protected void handleCommon(RoutingContext ctx, String[] requiredParams, String[
           action.apply(patronClient, params);
         })
         .onFailure(t -> {
+          logger.error("Error retrieving user data from cache or mod-user: ", t);
           if (isTimeoutException(t)) {
             requestTimeout(ctx, t.getMessage());
           } else {
@@ -265,7 +266,7 @@ protected void handleProxyResponse(RoutingContext ctx, HttpResponse<Buffer> resp
 
   @Override
   protected void handleProxyException(RoutingContext ctx, Throwable t) {
-    logger.error("Exception calling OKAPI", t);
+    logger.error("Exception retrieving data from mod-patron:", t);
     if (isTimeoutException(t)) {
       requestTimeout(ctx, t.getMessage());
     } else {