diff --git a/gcc/ada/sem_ch4.adb b/gcc/ada/sem_ch4.adb
index 77f2812ba38..a96ce9ff8f0 100644
--- a/gcc/ada/sem_ch4.adb
+++ b/gcc/ada/sem_ch4.adb
@@ -10223,7 +10223,7 @@ package body Sem_Ch4 is
             if Serious_Errors_Detected = 0 then
                Error_Msg_NE
                  ("cannot resolve prefixed call to primitive operation of&",
-                   N, Entity (Prefix (N)));
+                   N, Entity (Obj));
             end if;
          end if;