diff --git a/src/main/java/de/stklcode/pubtrans/ura/UraClient.java b/src/main/java/de/stklcode/pubtrans/ura/UraClient.java
index 2700799..eb12944 100644
--- a/src/main/java/de/stklcode/pubtrans/ura/UraClient.java
+++ b/src/main/java/de/stklcode/pubtrans/ura/UraClient.java
@@ -260,7 +260,7 @@ public class UraClient implements Serializable {
                 line = br.readLine();
             }
         } catch (IOException e) {
-            throw new IllegalStateException("Failed to read from API", e);
+            throw new IllegalStateException("Failed to read trips from API", e);
         }
         return trips;
     }
@@ -330,7 +330,7 @@ public class UraClient implements Serializable {
                 }
             }
         } catch (IOException e) {
-            throw new IllegalStateException("Failed to read from API", e);
+            throw new IllegalStateException("Failed to read stops from API", e);
         }
         return stops;
     }
@@ -385,7 +385,7 @@ public class UraClient implements Serializable {
                 line = br.readLine();
             }
         } catch (IOException e) {
-            throw new IllegalStateException("Failed to read from API", e);
+            throw new IllegalStateException("Failed to read messages from API", e);
         }
         return messages;
     }
diff --git a/src/main/java/de/stklcode/pubtrans/ura/reader/AsyncUraTripReader.java b/src/main/java/de/stklcode/pubtrans/ura/reader/AsyncUraTripReader.java
index c808876..e5705f2 100644
--- a/src/main/java/de/stklcode/pubtrans/ura/reader/AsyncUraTripReader.java
+++ b/src/main/java/de/stklcode/pubtrans/ura/reader/AsyncUraTripReader.java
@@ -134,7 +134,7 @@ public class AsyncUraTripReader implements AutoCloseable {
         } catch (InterruptedException e) {
             Thread.currentThread().interrupt();
         } catch (ExecutionException e) {
-            throw new IllegalStateException("Failed to read from API", e);
+            throw new IllegalStateException("Failed to close API connection", e);
         } catch (TimeoutException e) {
             // Task failed to finish within 1 second.
             future.cancel(true);