diff --git a/kotlin/src/test/java/com/squareup/moshi/kotlin/KotlinJsonAdapterTest.kt b/kotlin/src/test/java/com/squareup/moshi/kotlin/KotlinJsonAdapterTest.kt
index d78b442..2f1ec15 100644
--- a/kotlin/src/test/java/com/squareup/moshi/kotlin/KotlinJsonAdapterTest.kt
+++ b/kotlin/src/test/java/com/squareup/moshi/kotlin/KotlinJsonAdapterTest.kt
@@ -162,7 +162,7 @@ class KotlinJsonAdapterTest {
       jsonAdapter.fromJson("{\"a\":\"hello\"}")
       fail()
     } catch (expected: JsonDataException) {
-      assertThat(expected).hasMessage("Non-null value 'a' was null at \$")
+      assertThat(expected).hasMessage("Non-null value 'a' was null at \$.a")
     }
   }
 
@@ -190,7 +190,7 @@ class KotlinJsonAdapterTest {
       jsonAdapter.fromJson("{\"a\":\"hello\"}")
       fail()
     } catch (expected: JsonDataException) {
-      assertThat(expected).hasMessage("Non-null value 'a' was null at \$")
+      assertThat(expected).hasMessage("Non-null value 'a' was null at \$.a")
     }
   }